Squad, walaupun Ujian Tengah Semester masih beberapa minggu lagi, coba persiapkan diri dari sekarang yuk! Agar nilai ulangan kamu mendapatkan hasil terbaik, kamu tentu harus banyak belajar dan latihan soal. Nah, kali ini kita akan latihan UTS mata pelajaran Biologi untuk kelas 12 ya. Langsung aja cek soal-soal latihan berikut!
Topik : Pertumbuhan dan Perkembangan
1. Masuknya air ke dalam biji (imbibisi) saat proses perkecambahan akan menyebabkan perubahan kondisi di dalam sel, yaitu….
- aktifnya hormon pertumbuhan
- aktifnya enzim yang mempercepat reaksi biokimiawi
- terbentuknya embrio yang matang
- terbentuknya komponen-komponen sel
- meningkatkan nutrisi di dalam sel
Kunci : B
Pembahasan :
Air yang masuk ke dalam biji saat peristiwa imbibisi merupakan faktor eksternal yang mempengaruhi proses perkecambahan. Air akan mengaktifkan enzim-enzim yang akan mengkatalis atau mempercapat reaksi biokimiawi saat perkecambahan. Proses biokimiawi tersebut diantaranya reaksi pembongkaran cadangan makanan yang ada pada kotiledon. Hasil reaksi biokimiawi tersebut yang akan digunakan untuk sumber energi, bahan penyusun komponen sel dan pertumbuhan embrio.
Topik : Pertumbuhan dan Perkembangan
2. Apabila kuncup apikal yang sedang tumbuh diarahkan pada cahaya matahari maka….
- terbentuknya hormon auksin dan pertumbuhan batang semakin cepat
- terjadi pertumbuhan sel-sel di kuncup apikal
- kerja auksin terhambat dan batang tumbuh melengkung ke arah cahaya matahari
- pembentukan tunas lateral terhambat
- hormon auksin aktif dan batang tumbuh menjauhi arah cahaya matahari
Kunci : C
Pembahasan :
Kuncup apikal yang sedang tumbuh akan menghasilkan hormon auksin. Sifat hormon auksin adalah aktivasinya dihambat oleh adanya cahaya. Jika kuncup apikal yang sedang tumbuh diarahkan pada cahaya matahari maka akan terjadi pengangkutan auksin dari bagian yang terkena cahaya ke bagian yang terlindungi cahaya dan pertumbuhan sel-sel di bagian yang terkena cahaya akan terhambat dan mengakibatkan batang akan tumbuh melengkung ke arah datangnya cahaya matahari.
Topik : Metabolisme Sel Enzim
3. Meskipun terdapat ribuan enzim di dalam tubuh makhluk hidup, tetapi tidak akan pernah terjadi kesalahan reaksi seperti suatu substrat dikatalis oleh enzim yang salah. Hal tersebut merupakan sifat enzim yaitu….
- mempercepat laju reaksi kimia
- tidak ikut bereaksi
- sebagai biokatalisator
- sebagai katalisator organik
- bekerja secara spesifik
Kunci : E
Pembahasan :
Salah satu sifat enzim yaitu merupakan katalisator berbahan organik yang bekerja secara spesifik. Artinya satu jenis enzim hanya dapat mengatalisis/mempercepat satu jenis reaksi kimia. Misalnya enzim amilase di mulut hanya dapat mengkatalis reaksi pemecahan amilum menjadi glukosa.
Topik : Metabolisme Sel Enzim
4. Enzim disebut sebagai biokatalisator, yang berarti….
- senyawa anorganik yang mempercepat metabolisme
- senyawa organik yang menghambat metabolisme
- senyawa anorganik yang tidak ikut bereaksi dalam metabolisme
- senyawa organik yang mempercepat metabolisme
- senyawa organik yang ikut bereaksi dalam metabolisme
Kunci : D
Pembahasan :
Biokatalisator adalah senyawa organik berupa protein yang berfungsi meningkatkan laju reaksi kimia terutama dalam proses metabolisme, tetapi tidak ikut bereaksi dalam proses tersebut. Metabolisme akan mengakibatkan perubahan molekul dan menyebabkan perubahan energi.
Topik : Metabolisme Sel Katabolisme Karbohidrat
5. Produk glikolisis yang diolah sebagai bahan proses anabolisme karbohidrat adalah…
- asam piruvat
- glikogen
- polisakarida
- 3-fosfoenol piruvat (PEP)
- fosfogliseraldehid
Kunci : E
Pembahasan :
Terdapat 10 tahapan reaksi glikolisis saat memecah komponen glukosa menjadi asam piruvat, ATP dan NADH. Diantara 10 tahapan tersebut terdapat tahapan pengubahan 3-fosfogliseroil fosfat menjadi 3-fosfogliseraldehid dan ATP. Diketahui bahwa fosfogliseraldehid (PG) merupakan salah satu bahan dalam siklus calvin pada reaksi gelap anabolisme karbohidrat (Fotosintesis). Fosfogliseraldehid (PG) dalam siklus calvin akan difosforilasi menggunakan ATP menjadi gliseraldehid 3-fosfat yang akan meregenerasi RuBP hingga siklus calvin dapat berlanjut.
Topik : Metabolisme Sel Katabolisme Karbohidrat
6. Fermentasi merupakan proses penguraian senyawa organik yang menggunakan… sebagai akseptor elektron terakhirnya.
- senyawa organik
- senyawa anorganik
- oksigen
- karbon dioksida
- ATP
Kunci : D
Pembahasan :
Fermentasi merupakan proses respirasi anaerob karena tidak menggunakan oksigen sebagai akseptor terakhir elektronnya. Pada fermentasi, senyawa antara yang menjadi akseptor elektron terakhir. Senyawa antara tersebut di antaranyan asam piruvat, asetaldehid dan karbon dioksida.
Topik : Metabolisme Sel Anabolisme
7. Tahap pertama fotosintesis adalah…
- Energi cahaya dipanen, elektron tereksitasi.
- Energi cahaya dipanen, klorofil menghasilkan elektron.
- Energi cahaya dipanen, klorofil menghasilkan elektron.
- Energi cahaya dipanen, karbon dioksida direduksi.
- Energi cahaya dipanen, terjadi pembentukan ATP.
Kunci : A
Pembahasan :
Reaksi fotosintesis terdiri dari dua tahap yaitu reaksi terang dan reaksi gelap. Pada reaksi terang terjadi penyerapan energi matahari oleh klorofil. Pada tahapan awal reaksi terang terjadi penyerapan cahaya matahari oleh klorofil b (P680). Adanya pemanenan cahaya tersebut mengakibatkan elektron dalam klorofil tereksitasi atau terlepas dan selanjutnya elektron tersebut akan ditangkap oleh akseptor elektron dan menyebabkan adanya rantai transpor elektron dalam reaksi terang.
Topik : Metabolisme Sel Anabolisme
8. Bakteri Nitrosomonas termasuk ke dalam bakteri kemosintetik yang akan mengubah….
- amonium menjadi nitrat
- nitrat menjadi karbon dioksida
- amonium menjadi nitrit
- nitrit menjadi nitrat
- nitrat menjadi karbonat
Kunci : C
Pembahasan :
Bakteri Nitrosomonas disebut juga sebagai bakteri nitrit yaitu akan mengubah amonium (NH4) menjadi Nitrit (NO2) dengan reaksi sebagai berikut :
Topik : Materi Genetik
9. Seseorang yang memiliki gen kulit putih, tetapi hidup di daerah panas kemungkinan warna kulitnya bisa berwarna agak hitam. Hal tersebut dapat terjadi karena….
- fenotip yang muncul hanya dipengaruhi oleh gen
- gen akan mengatur segala sifat yang tampak pada organisme
- fenotip merupakan hasil interaksi antara gen dan lingkungan
- lingkungan dapat mempengaruhi pembentukan gen
- sifat yang tampak tidak dipengaruhi oleh faktor lingkungan
Kunci : C
Pembahasan :
Kulit putih merupakan fenotip atau sifat yang tampak. Sifat yang tampak ini merupakan hasil interaksi antara faktor genetik dan faktor lingkungan. Maka jika seseorang memiliki gen kulit putih tetapi berada di lingkungan yang panas maka sinar matahari dapat mengubah sifat yang tampak tersebut sehingga berubah menjadi agak hitam.
Topik : Materi Genetik
10. Suatu rantai sense DNA memiliki urutan basa AUGGACCAGGATATATGA. Berdasarkan hal tersebut, pernyataan yang benar adalah…
- Urutan basa tersebut mengode 6 asam amino.
- Urutan basa tersebut mengode 18 asam amino.
- Urutan basa tersebut terdiri atas 18 kodon.
- Urutan antikodonnya adalah UTCCUGGUCCUAUAUACU.
- Urutan kodogennya adalah AUGGACCAGGATATATGA.
Kunci : E
Pembahasan :
Urutan rantai sense DNA disebut juga kodogen, sehingga urutan kodogen akan sama dengan rantai sense DNA yaitu AUGGACCAGGATATATGA. Urutan tersebut akan diubah menjadi triplet kodon yaitu UACAUGUACUAUAUACU dan akan mengode 5 asam amino karena AUG merupakan start kodon sehingga tidak akan ditranslasi mejadi asam amino.
Nah, Squad. Mudah atau susah nih soalnya? Apakah semua soalnya dapat kamu jawab dengan baik? Kalau kamu merasa kesulitan dalam mengerjakan latihan soal atau tugas sekolah apapun, kamu bisa lho nanya sama tutor-tutor terbaik di bidangnya. Caranya gampang banget! Kamu hanya perlu daftar di ruanglesonline. Kamu hanya perlu kirim foto soal yang kamu mau tanyakan dan nanti tutor terbaik Ruangguru siap selalu menjawab pertanyaan dari kamu! Tanya soal jadi lebih mudah bukan? Ayo daftar sekarang!
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<h1 class="content-title">
Soal Latihan UTS Ganjil Biologi SMA kelas 12 </h1>
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<p class="content-author"><a href="https://www.ruangguru.com/blog/author/anggraeni-puspitasari" class="">Anggraeni Puspitasari</a> </p>
<p class="content-info"><span>August 10, 2018 • </span> <span>6 minutes read</span></p>
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<p style="text-align: justify;">Squad, walaupun Ujian Tengah Semester masih beberapa minggu lagi, coba persiapkan diri dari sekarang yuk! Agar nilai ulangan kamu mendapatkan hasil terbaik, kamu tentu harus banyak belajar dan latihan soal. <em>Nah</em>, kali ini kita akan latihan UTS mata pelajaran Biologi untuk kelas 12 ya. Langsung aja cek soal-soal latihan berikut!</p>
<p><span id="more-9349"></span></p>
<p> <img decoding="async" src="https://cdn-web.ruangguru.com/landing-pages/assets/hs/border%20fix-7.jpg" alt="border fix-7" width="900" style="width: 900px; display: block; margin: 0px auto;"></p>
<p style="text-align: justify;"><strong>Topik</strong> <strong>: Pertumbuhan dan Perkembangan</strong></p>
<p style="text-align: justify;"><strong style="background-color: transparent;"><span style="font-weight: 400;">1. Masuknya air ke dalam biji (imbibisi) saat proses perkecambahan akan menyebabkan perubahan kondisi di dalam sel, yaitu….</span></strong></p>
<ol style="list-style-type: upper-alpha;">
<li><span style="font-weight: 400;"></span><span style="font-weight: 400;">aktifnya hormon pertumbuhan</span></li>
<li><span style="font-weight: 400;"></span><span style="font-weight: 400;">aktifnya enzim yang mempercepat reaksi biokimiawi</span></li>
<li><span style="font-weight: 400;"></span><span style="font-weight: 400;">terbentuknya embrio yang matang</span></li>
<li><span style="font-weight: 400;"></span><span style="font-weight: 400;">terbentuknya komponen-komponen sel</span></li>
<li><span style="font-weight: 400;"></span><span style="font-weight: 400;">meningkatkan nutrisi di dalam sel</span><span style="font-weight: 400;"></span></li>
</ol>
<p><span style="font-weight: 400;">Kunci </span><span style="font-weight: 400;">: B</span></p>
<p style="text-align: justify;"><span style="font-weight: 400;">Pembahasan : </span></p>
<p style="text-align: justify;"><span style="font-weight: 400;">Air yang masuk ke dalam biji saat peristiwa imbibisi merupakan faktor eksternal yang mempengaruhi proses perkecambahan. Air akan mengaktifkan enzim-enzim yang akan mengkatalis atau mempercapat reaksi biokimiawi saat perkecambahan. Proses biokimiawi tersebut diantaranya reaksi pembongkaran cadangan makanan yang ada pada kotiledon. Hasil reaksi biokimiawi tersebut yang akan digunakan untuk sumber energi, bahan penyusun komponen sel dan pertumbuhan embrio. </span></p>
<p><span style="font-weight: 400;"><img decoding="async" src="https://cdn-web.ruangguru.com/landing-pages/assets/hs/border%20fix-7.jpg" alt="border fix-7" width="900" style="width: 900px;"></span></p>
<p><strong>Topik</strong> <strong>: Pertumbuhan dan Perkembangan</strong></p>
<p style="text-align: justify;"><strong style="background-color: transparent;"><span style="font-weight: 400;">2. Apabila kuncup apikal yang sedang tumbuh diarahkan pada cahaya matahari maka….</span></strong></p>
<ol style="list-style-type: upper-alpha;">
<li><span style="font-weight: 400;"></span><span style="font-weight: 400;">terbentuknya hormon auksin dan pertumbuhan batang semakin cepat</span></li>
<li><span style="font-weight: 400;"></span><span style="font-weight: 400;">terjadi pertumbuhan sel-sel di kuncup apikal</span></li>
<li><span style="font-weight: 400;"></span><span style="font-weight: 400;">kerja auksin terhambat dan batang tumbuh melengkung ke arah cahaya matahari</span></li>
<li><span style="font-weight: 400;"></span><span style="font-weight: 400;">pembentukan tunas lateral terhambat</span></li>
<li>hormon auksin aktif dan batang tumbuh menjauhi arah cahaya matahari</li>
</ol>
<p style="text-align: justify;"><span style="font-weight: 400;">Kunci </span><span style="font-weight: 400;">: C</span></p>
<p style="text-align: justify;"><span style="font-weight: 400;">Pembahasan : </span></p>
<p style="text-align: justify;"><span style="font-weight: 400;">Kuncup apikal yang sedang tumbuh akan menghasilkan hormon auksin. Sifat hormon auksin adalah aktivasinya dihambat oleh adanya cahaya. Jika kuncup apikal yang sedang tumbuh diarahkan pada cahaya matahari maka akan terjadi pengangkutan auksin dari bagian yang terkena cahaya ke bagian yang terlindungi cahaya dan pertumbuhan sel-sel di bagian yang terkena cahaya akan terhambat dan mengakibatkan batang akan tumbuh melengkung ke arah datangnya cahaya matahari.</span></p>
<p style="text-align: justify;"><span style="font-weight: 400;"><img decoding="async" src="https://cdn-web.ruangguru.com/landing-pages/assets/hs/border%20fix-5.jpg" alt="border fix-5" width="900" style="width: 900px;"></span></p>
<p><strong>Topik</strong> <strong>: Metabolisme Sel Enzim</strong></p>
<p style="text-align: justify;"><strong style="background-color: transparent;"><span style="font-weight: 400;">3. Meskipun terdapat ribuan enzim di dalam tubuh makhluk hidup, tetapi tidak akan pernah terjadi kesalahan reaksi seperti suatu substrat dikatalis oleh enzim yang salah. Hal tersebut merupakan sifat enzim yaitu….</span></strong></p>
<ol style="list-style-type: lower-alpha;">
<li><span style="font-weight: 400;"></span><span style="font-weight: 400;">mempercepat laju reaksi kimia</span></li>
<li><span style="font-weight: 400;"></span><span style="font-weight: 400;">tidak ikut bereaksi</span></li>
<li><span style="font-weight: 400;"></span><span style="font-weight: 400;">sebagai biokatalisator</span></li>
<li><span style="font-weight: 400;"></span><span style="font-weight: 400;">sebagai katalisator organik</span></li>
<li><span style="font-weight: 400;"></span><span style="font-weight: 400;">bekerja secara spesifik</span></li>
</ol>
<p><span style="font-weight: 400;">Kunci</span> <span style="font-weight: 400;">: E</span></p>
<p><span style="font-weight: 400;">Pembahasan : </span></p>
<p style="text-align: justify;"><span style="font-weight: 400;">Salah satu sifat enzim yaitu merupakan katalisator berbahan organik yang bekerja secara spesifik. Artinya satu jenis enzim hanya dapat mengatalisis/mempercepat satu jenis reaksi kimia. Misalnya enzim amilase di mulut hanya dapat mengkatalis reaksi pemecahan amilum menjadi glukosa.</span></p>
<p style="text-align: justify;"><span style="font-weight: 400;"><img decoding="async" src="https://cdn-web.ruangguru.com/landing-pages/assets/hs/border%20fix-7.jpg" alt="border fix-7" width="900" style="width: 900px;"></span></p>
<p style="text-align: justify;"> <strong style="background-color: transparent;">Topik </strong><strong style="background-color: transparent;">: Metabolisme Sel Enzim</strong></p>
<p><strong><span style="font-weight: 400;">4. Enzim disebut sebagai biokatalisator, yang berarti….</span><br /></strong></p>
<ol style="list-style-type: upper-alpha;">
<li><span style="font-weight: 400;"></span><span style="font-weight: 400;">senyawa anorganik yang mempercepat metabolisme</span></li>
<li><span style="font-weight: 400;"></span><span style="font-weight: 400;">senyawa organik yang menghambat metabolisme</span></li>
<li><span style="font-weight: 400;"></span><span style="font-weight: 400;">senyawa anorganik yang tidak ikut bereaksi dalam metabolisme</span></li>
<li><span style="font-weight: 400;"></span><span style="font-weight: 400;">senyawa organik yang mempercepat metabolisme</span></li>
<li><span style="font-weight: 400;"></span><span style="font-weight: 400;">senyawa organik yang ikut bereaksi dalam metabolisme</span></li>
</ol>
<p><span style="font-weight: 400;">Kunci </span><span style="font-weight: 400;">: D</span></p>
<p><span style="font-weight: 400;">Pembahasan : </span></p>
<p style="text-align: justify;"><span style="font-weight: 400;">Biokatalisator adalah senyawa organik berupa protein yang berfungsi meningkatkan laju reaksi kimia terutama dalam proses metabolisme, tetapi tidak ikut bereaksi dalam proses tersebut. Metabolisme akan mengakibatkan perubahan molekul dan menyebabkan perubahan energi.</span></p>
<p style="text-align: justify;"><span style="font-weight: 400;"><img decoding="async" src="https://cdn-web.ruangguru.com/landing-pages/assets/hs/border%20fix-5.jpg" alt="border fix-5" width="900" style="width: 900px;"></span></p>
<p><strong>Topik</strong> <strong>: Metabolisme Sel Katabolisme Karbohidrat</strong></p>
<p style="text-align: justify;"><strong style="background-color: transparent;"><span style="font-weight: 400;">5. Produk glikolisis yang diolah sebagai bahan proses anabolisme karbohidrat adalah…</span></strong></p>
<ol style="list-style-type: upper-alpha;">
<li><span style="font-weight: 400;"></span><span style="font-weight: 400;">asam piruvat</span></li>
<li><span style="font-weight: 400;"></span><span style="font-weight: 400;">glikogen</span></li>
<li><span style="font-weight: 400;"></span><span style="font-weight: 400;">polisakarida</span></li>
<li><span style="font-weight: 400;"></span><span style="font-weight: 400;">3-fosfoenol piruvat (PEP)</span></li>
<li><span style="font-weight: 400;"></span><span style="font-weight: 400;">fosfogliseraldehid</span></li>
</ol>
<p><span style="font-weight: 400;">Kunci </span><span style="font-weight: 400;">: E</span></p>
<p><span style="font-weight: 400;">Pembahasan : </span></p>
<p style="text-align: justify;"><span style="font-weight: 400;">Terdapat 10 tahapan reaksi glikolisis saat memecah komponen glukosa menjadi asam piruvat, ATP dan NADH. Diantara 10 tahapan tersebut terdapat tahapan pengubahan 3-fosfogliseroil fosfat menjadi 3-fosfogliseraldehid dan ATP. Diketahui bahwa fosfogliseraldehid (PG) merupakan salah satu bahan dalam siklus calvin pada reaksi gelap anabolisme karbohidrat (Fotosintesis). Fosfogliseraldehid (PG) dalam siklus calvin akan difosforilasi menggunakan ATP menjadi gliseraldehid 3-fosfat yang akan meregenerasi RuBP hingga siklus calvin dapat berlanjut.</span></p>
<p style="text-align: justify;"><span style="font-weight: 400;"><img decoding="async" src="https://cdn-web.ruangguru.com/landing-pages/assets/hs/border%20fix-7.jpg" alt="border fix-7" width="900" style="width: 900px;"></span></p>
<p><strong>Topik</strong> <strong>: Metabolisme Sel Katabolisme Karbohidrat</strong></p>
<p style="text-align: justify;"><strong style="background-color: transparent;"><span style="font-weight: 400;">6. Fermentasi merupakan proses penguraian senyawa organik yang menggunakan… sebagai akseptor elektron terakhirnya.</span></strong></p>
<ol style="list-style-type: upper-alpha;">
<li><span style="font-weight: 400;"></span><span style="font-weight: 400;">senyawa organik</span></li>
<li><span style="font-weight: 400;"></span><span style="font-weight: 400;">senyawa anorganik</span></li>
<li><span style="font-weight: 400;"></span><span style="font-weight: 400;">oksigen</span></li>
<li><span style="font-weight: 400;"></span><span style="font-weight: 400;">karbon dioksida</span></li>
<li><span style="font-weight: 400;"></span><span style="font-weight: 400;">ATP</span></li>
</ol>
<p style="text-align: justify;"><span style="font-weight: 400;">Kunci </span><span style="font-weight: 400;">: D</span></p>
<p style="text-align: justify;"><span style="font-weight: 400;">Pembahasan : </span></p>
<p style="text-align: justify;"><span style="font-weight: 400;">Fermentasi merupakan proses respirasi anaerob karena tidak menggunakan oksigen sebagai akseptor terakhir elektronnya. Pada fermentasi, senyawa antara yang menjadi akseptor elektron terakhir. Senyawa antara tersebut di antaranyan asam piruvat, asetaldehid dan karbon dioksida.</span></p>
<p style="text-align: justify;"><span style="font-weight: 400;"><img decoding="async" src="https://cdn-web.ruangguru.com/landing-pages/assets/hs/border%20fix-5.jpg" alt="border fix-5" width="900" style="width: 900px;"></span></p>
<p><strong>Topik</strong> <strong>: Metabolisme Sel Anabolisme</strong></p>
<p><span style="background-color: transparent;">7. Tahap pertama fotosintesis adalah…</span></p>
<ol style="list-style-type: upper-alpha;">
<li><span style="font-weight: 400;"></span><span style="font-weight: 400;">Energi cahaya dipanen, elektron tereksitasi.</span></li>
<li><span style="font-weight: 400;"></span><span style="font-weight: 400;">Energi cahaya dipanen, klorofil menghasilkan elektron.</span></li>
<li><span style="font-weight: 400;"></span><span style="font-weight: 400;">Energi cahaya dipanen, klorofil menghasilkan elektron.</span></li>
<li><span style="font-weight: 400;"></span><span style="font-weight: 400;">Energi cahaya dipanen, karbon dioksida direduksi.</span></li>
<li><span style="font-weight: 400;"></span><span style="font-weight: 400;">Energi cahaya dipanen, terjadi pembentukan ATP.</span></li>
</ol>
<p><span style="font-weight: 400;">Kunci</span> <span style="font-weight: 400;">: A</span></p>
<p><span style="font-weight: 400;">Pembahasan : </span></p>
<p style="text-align: justify;"><span style="font-weight: 400;">Reaksi fotosintesis terdiri dari dua tahap yaitu reaksi terang dan reaksi gelap. Pada reaksi terang terjadi penyerapan energi matahari oleh klorofil. Pada tahapan awal reaksi terang terjadi penyerapan cahaya matahari oleh klorofil b (P680). Adanya pemanenan cahaya tersebut mengakibatkan elektron dalam klorofil tereksitasi atau terlepas dan selanjutnya elektron tersebut akan ditangkap oleh akseptor elektron dan menyebabkan adanya rantai transpor elektron dalam reaksi terang.</span></p>
<p style="text-align: justify;"><span style="font-weight: 400;"><img decoding="async" src="https://cdn-web.ruangguru.com/landing-pages/assets/hs/border%20fix-5.jpg" alt="border fix-5" width="900" style="width: 900px;"></span></p>
<p><strong>Topik</strong> <strong>: Metabolisme Sel Anabolisme</strong></p>
<p style="text-align: justify;"><span style="font-weight: 400;">8. Bakteri </span><i style="background-color: transparent;"><span>Nitrosomonas</span></i><span style="font-weight: 400;"> termasuk ke dalam bakteri kemosintetik yang akan mengubah….</span></p>
<ol style="list-style-type: upper-alpha;">
<li><span style="font-weight: 400;"></span><span style="font-weight: 400;">amonium menjadi nitrat</span></li>
<li><span style="font-weight: 400;"></span><span style="font-weight: 400;">nitrat menjadi karbon dioksida</span></li>
<li><span style="font-weight: 400;"></span><span style="font-weight: 400;">amonium menjadi nitrit</span></li>
<li><span style="font-weight: 400;"></span><span style="font-weight: 400;">nitrit menjadi nitrat</span></li>
<li><span style="font-weight: 400;"></span><span style="font-weight: 400;">nitrat menjadi karbonat</span></li>
</ol>
<p><span style="font-weight: 400;">Kunci </span><span style="font-weight: 400;">: C</span></p>
<p><span style="font-weight: 400;">Pembahasan : </span></p>
<p style="text-align: justify;"><span style="font-weight: 400;">Bakteri </span><i><span style="font-weight: 400;">Nitrosomonas </span></i><span style="font-weight: 400;">disebut juga sebagai bakteri nitrit yaitu akan mengubah amonium (NH</span><span style="font-weight: 400;">4</span><span style="font-weight: 400;">) menjadi Nitrit (NO</span><span style="font-weight: 400;">2</span><span style="font-weight: 400;">) dengan reaksi sebagai berikut :</span></p>
<p><span style="font-weight: 400;"><img decoding="async" src="https://cdn-web.ruangguru.com/landing-pages/assets/hs/biologi%20kelas%2012.jpg" alt="biologi kelas 12" width="600" style="width: 600px; display: block; margin: 0px auto;"></span></p>
<p><span style="font-weight: 400;"><img decoding="async" src="https://cdn-web.ruangguru.com/landing-pages/assets/hs/border%20fix-7.jpg" alt="border fix-7" width="900" style="width: 900px;"></span></p>
<p><strong>Topik</strong> <strong>: Materi Genetik</strong></p>
<p style="text-align: justify;"><span style="background-color: transparent;">9. Seseorang yang memiliki gen kulit putih, tetapi hidup di daerah panas kemungkinan warna kulitnya bisa berwarna agak hitam. Hal tersebut dapat terjadi karena….</span></p>
<ol style="list-style-type: upper-alpha;">
<li style="text-align: justify;"><span style="font-weight: 400;"></span><span style="font-weight: 400;">fenotip yang muncul hanya dipengaruhi oleh gen</span></li>
<li style="text-align: justify;"><span style="font-weight: 400;"></span><span style="font-weight: 400;">gen akan mengatur segala sifat yang tampak pada organisme</span></li>
<li style="text-align: justify;"><span style="font-weight: 400;"></span><span style="font-weight: 400;">fenotip merupakan hasil interaksi antara gen dan lingkungan</span></li>
<li style="text-align: justify;"><span style="font-weight: 400;"></span><span style="font-weight: 400;">lingkungan dapat mempengaruhi pembentukan gen</span></li>
<li style="text-align: justify;"><span style="font-weight: 400;"></span><span style="font-weight: 400;">sifat yang tampak tidak dipengaruhi oleh faktor lingkungan</span></li>
</ol>
<p><span style="font-weight: 400;">Kunci </span><span style="font-weight: 400;">: C</span></p>
<p style="text-align: justify;"><span style="font-weight: 400;">Pembahasan : </span></p>
<p style="text-align: justify;"><span style="font-weight: 400;">Kulit putih merupakan fenotip atau sifat yang tampak. Sifat yang tampak ini merupakan hasil interaksi antara faktor genetik dan faktor lingkungan. Maka jika seseorang memiliki gen kulit putih tetapi berada di lingkungan yang panas maka sinar matahari dapat mengubah sifat yang tampak tersebut sehingga berubah menjadi agak hitam.</span></p>
<p style="text-align: justify;"><span style="font-weight: 400;"><img decoding="async" src="https://cdn-web.ruangguru.com/landing-pages/assets/hs/border%20fix-7.jpg" alt="border fix-7" width="900" style="width: 900px;"></span></p>
<p><strong>Topik</strong> <strong>: Materi Genetik</strong></p>
<p style="text-align: justify;"><span style="background-color: transparent;">10. Suatu rantai sense DNA memiliki urutan basa AUGGACCAGGATATATGA. Berdasarkan hal tersebut, pernyataan yang benar adalah…</span></p>
<ol style="list-style-type: upper-alpha;">
<li style="text-align: justify;"><span style="font-weight: 400;"></span><span style="font-weight: 400;">Urutan basa tersebut mengode 6 asam amino.</span></li>
<li style="text-align: justify;"><span style="font-weight: 400;"></span><span style="font-weight: 400;">Urutan basa tersebut mengode 18 asam amino.</span></li>
<li style="text-align: justify;"><span style="font-weight: 400;"></span><span style="font-weight: 400;">Urutan basa tersebut terdiri atas 18 kodon.</span></li>
<li style="text-align: justify;"><span style="font-weight: 400;"></span><span style="font-weight: 400;">Urutan antikodonnya adalah UTCCUGGUCCUAUAUACU.</span></li>
<li style="text-align: justify;"><span style="font-weight: 400;"></span><span style="font-weight: 400;">Urutan kodogennya adalah AUGGACCAGGATATATGA.</span></li>
</ol>
<p><span style="font-weight: 400;">Kunci</span> <span style="font-weight: 400;">: E</span></p>
<p><span style="font-weight: 400;">Pembahasan : </span></p>
<p style="text-align: justify;"><span style="font-weight: 400;">Urutan rantai sense DNA disebut juga kodogen, sehingga urutan kodogen akan sama dengan rantai sense DNA yaitu AUGGACCAGGATATATGA. Urutan tersebut akan diubah menjadi triplet kodon yaitu UACAUGUACUAUAUACU dan akan mengode 5 asam amino karena AUG merupakan start kodon sehingga tidak akan ditranslasi mejadi asam amino.</span></p>
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<li><a href="https://pengajar.ruangguru.com/">Ruangpengajar</a></li>
<li><a href="https://www.ruangguru.com/privat">Ruangguru Privat</a></li>
<li><a href="https://www.ruangpeduli.org/" target="_blank">Ruangpeduli</a></li>
</ul>
</nav>
</div>
<div class="col-6 col-md-3">
<nav class="footer-menu">
<p class="title">Bantuan & Panduan</p>
<ul type="none">
<li><a href="https://www.ruangguru.com/company-credentials">Company Credentials</a></li>
<li><a href="https://www.ruangguru.com/beasiswa">Beasiswa Ruangguru</a></li>
<li><a href="https://www.ruangguru.com/cicilan">Cicilan Ruangguru</a></li>
<li><a href="https://www.ruangguru.com/promo">Promo Ruangguru</a></li>
<li><a href="https://ticketing.ruangguru.com/help?request_type_id=459" target="_blank">Vulnerability Report</a></li>
<li><a href="https://www.ruangguru.com/bantuan#layanan">Layanan Pengaduan</a></li>
<li><a href="https://www.ruangguru.com/terms-conditions">Syarat & Ketentuan</a></li>
<li><a href="https://www.ruangguru.com/privacy-policy">Kebijakan Privasi</a></li>
<li><a href="https://www.ruangguru.com/about-us">Tentang Kami</a></li>
<li><a href="https://www.ruangguru.com/contact-us">Kontak Kami</a></li>
<li><a href="https://www.ruangguru.com/press">Press Kit</a></li>
<li><a href="https://www.ruangguru.com/bantuan">Bantuan</a></li>
<li><a href="https://career.ruangguru.com/">Karier</a></li>
</ul>
</nav>
</div>
<div class="col-6 col-md-3">
<nav class="footer-menu">
<p class="title">Produk Lainnya</p>
<ul type="none">
<li><a href="https://www.brainacademy.id/" target="_blank">Brain Academy</a></li>
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<li><a href="https://skillacademy.com/" target="_blank">Skill Academy</a></li>
<li><a href="https://www.ruangkerja.id/" target="_blank">Ruangkerja</a></li>
<li><a href="https://www.schoters.com/id/" target="_blank">Schoters</a></li>
<li><a href="https://www.kalananti.id/" target="_blank">Kalananti</a></li>
</ul>
</nav>
</div>
<div class="col-6 col-md-3">
<nav class="footer-menu">
<p class="title"> Coba GRATIS Aplikasi Ruangguru</p>
<div class="download-list">
<ul>
<li>
<a target="_blank" rel="nofollow" href="https://apps.apple.com/id/app/ruangguru-solusi-belajar/id1099742206?l=id">
<img src="https://cdn-web-2.ruangguru.com/static/appstore.png" loading="lazy" alt="Button App Store Footer " />
</a>
</li>
<li>
<a target="_blank" rel="nofollow" href="https://play.google.com/store/apps/details?id=com.ruangguru.livestudents&hl=in">
<img src="https://cdn-web-2.ruangguru.com/static/googleplay.png" loading="lazy" alt="Button Google Play Footer " />
</a>
</li>
<li>
<a target="_blank" rel="nofollow" href="https://appgallery.huawei.com/#/app/C102352375">
<img src="https://cdn-web-2.ruangguru.com/static/huawei.png" loading="lazy" alt="Button AppGallery Footer " />
</a>
</li>
</ul>
</div>
</nav>
</div>
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</div>
</div>
<div class="d-lg-none text-center">
<nav class="footer-menu social">
<p class="title">Ikuti Kami</p>
<a target="_blank" href="https://www.instagram.com/ruangguru/">
<picture>
<source srcset="https://cdn-web-2.ruangguru.com/static/instagram.png?height=60&convert=webp" type="image/webp">
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<img src="https://cdn-web-2.ruangguru.com/static/instagram.png" loading="lazy" alt="Logo Instagram Footer" width="32px" height="32px" />
</picture>
</a>
<a target="_blank" href="https://www.facebook.com/ruanggurucom/">
<picture>
<source srcset="https://cdn-web-2.ruangguru.com/static/facebook.png?height=60&convert=webp" type="image/webp">
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<img src="https://cdn-web-2.ruangguru.com/static/facebook.png" loading="lazy" alt="Logo Facebook Footer" width="32px" height="32px" />
</picture>
</a>
<a target="_blank" href="https://twitter.com/ruangguru/">
<picture>
<source srcset="https://cdn-web-2.ruangguru.com/static/twitter.png?height=60&convert=webp" type="image/webp">
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</picture>
</a>
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<picture>
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</picture>
</a>
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<picture>
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</picture>
</a>
</nav>
</div>
<p class="footer-copyright">
© 2026 All Rights Reserved PT. Ruang Raya Indonesia
</p>
</div>
<style>
.bantuan-container {
position: relative;
}
.bantuan-element {
position: fixed;
z-index: 999;
display: flex;
align-items: flex-end;
justify-content: flex-end;
cursor: pointer;
transition: all 0.6s ease;
}
.bantuan-top {
bottom: 11rem;
right: 2rem;
}
.bantuan-bottom {
bottom: 2rem;
right: 2rem;
}
.bantuan-top-2 {
bottom: 15rem;
right: 2rem;
}
.bantuan-top-3 {
bottom: 19rem;
right: 2rem;
}
.bantuan-bottom-2 {
bottom: 5rem;
right: 2rem;
}
.bantuan-bottom-3 {
bottom: 8rem;
right: 2rem;
}
@media (min-width: 768px) {
.bantuan-element img {
width: auto;
transition: all 0.4s ease;
}
.bantuan-top img {
width: 140px;
}
.bantuan-bottom img {
width: 140px;
}
.bantuan-top-2 img,
.bantuan-top-3 img {
width: 140px;
}
.bantuan-bottom-2 img,
.bantuan-bottom-3 img {
width: 140px;
}
.bantuan-element.clicked {
bottom: 9rem;
right: 2.5rem;
}
.bantuan-element.clicked img {
width: auto;
height: 64px;
}
}
@media (max-width: 767px) {
.bantuan-top {
bottom: 8rem;
right: 1rem;
align-items: center;
}
.bantuan-bottom {
bottom: 2rem;
right: 1.25rem;
align-items: center;
}
.bantuan-top-2 {
bottom: 12rem;
right: 1rem;
align-items: center;
}
.bantuan-top-3 {
bottom: 16rem;
right: 1rem;
align-items: center;
}
.bantuan-bottom-2 {
bottom: 5rem;
right: 1.25rem;
align-items: center;
}
.bantuan-bottom-3 {
bottom: 8rem;
right: 1.25rem;
align-items: center;
}
.bantuan-element img {
width: auto;
}
.bantuan-top img,
.bantuan-top-2 img,
.bantuan-top-3 img {
width: 96px;
}
.bantuan-bottom img,
.bantuan-bottom-2 img,
.bantuan-bottom-3 img {
width: 96px;
}
}
.bantuan-element:hover {
transform: scale(1.05);
}
.bantuan-element img {
max-width: 100%;
height: auto;
}
</style>
<div id="bantuan-divs-container" style="position: relative" data-product="ruangguru" data-table="rg_floating_icon"></div>
<script>
class FloatingDivsComponent {
constructor(product = 'ruangguru', table = 'rg_floating_icon') {
this.container = document.getElementById('bantuan-divs-container');
this.floatingElements = [];
this.product = product;
this.table = table;
// Configuration
this.config = {
baseApiUrl: 'https://gw.ruangguru.com/api/v3/rdb/p_ddgy8hjx5dxsqx/rg_banner/views/',
apiKey: 'vLyK3dJrDBRmOwueX2OJXibMkgsUbBk0WS4ua2p1',
maxElements: 2,
zIndexBase: 100,
};
// Build dynamic API URL based on table parameter
this.config.apiUrl = this.buildApiUrl();
this.init();
}
buildApiUrl() {
const baseUrl = this.config.baseApiUrl;
const tableName = this.table || 'rg_floating_icon';
const queryParams =
'offset=0&limit=99999&sort=rankPosition&where=(type,eq,floating)~and(showIn,anyof,blog)~and(hide,is,false)~and(product,eq,' +
this.product +
')&nested%5Bcta%5D%5Bfields%5D=Id,name,ctaId,imageUrl,ctaLink,targetUrl';
return `${baseUrl}${tableName}?${queryParams}`;
}
async init() {
try {
await this.fetchFloatingElements();
this.renderFloatingElements();
} catch (error) {
console.error('Failed to initialize floating divs component:', error);
}
}
async fetchFloatingElements() {
try {
const options = {
method: 'GET',
headers: {
'xc-token': this.config.apiKey || 'vLyK3dJrDBRmOwueX2OJXibMkgsUbBk0WS4ua2p1',
},
};
const urlNoco = this.config.apiUrl;
const response = await fetch(urlNoco, options);
if (!response.ok) {
throw new Error(`HTTP error! status: ${response.status}`);
}
const data = await response.json();
this.floatingElements = this.processApiResponse(data);
} catch (error) {
console.error('Error fetching floating elements:', error);
throw error;
}
}
processApiResponse(data) {
if (!data || !data.list || !Array.isArray(data.list)) {
return [];
}
console.log(data.list);
// Ensure we only get maximum 2 elements
const limitedElements = data.list.slice(0, this.config.maxElements);
return limitedElements;
}
renderFloatingElements() {
if (!this.container || this.floatingElements.length === 0) {
return;
}
// Additional safeguard: ensure we never render more than maxElements
const elementsToRender = this.floatingElements.slice(0, this.config.maxElements);
// Clean up existing elements and their event listeners
this.cleanupExistingElements();
// Clear existing content
this.container.innerHTML = '';
elementsToRender.forEach((element, index) => {
const floatingDiv = this.createFloatingDiv(element, index);
this.container.appendChild(floatingDiv);
});
}
cleanupExistingElements() {
// Clear existing elements (no need for event listener cleanup with CSS approach)
const existingElements = this.container.querySelectorAll('[data-floating-element]');
existingElements.forEach(element => {
element.remove();
});
}
createFloatingDiv(element, index) {
const div = document.createElement('div');
const cta = element.cta[0]; // Use the first CTA
// Add data attribute for cleanup tracking
div.setAttribute('data-floating-element', 'true');
// Apply CSS classes based on rankPosition
const positionClass = this.getPositionClass(element.rankPosition, index);
div.className = `bantuan-element ${positionClass}`;
div.style.zIndex = this.config.zIndexBase + index;
// Create the link and image
const link = document.createElement('a');
link.href = 'https://cta.ruangguru.com/' + cta.ctaId || '#';
link.target = '_blank';
// Add tracking attributes
link.setAttribute('data-tracking-event-type', 'landing_page__core__item_click');
link.setAttribute(
'data-tracking-context',
JSON.stringify({
product_name: this.product,
cta_action: 'redirection',
cta_action_detail: link.href,
item_type: 'floating',
item_name: element.name || 'Floating element',
item_category: 'payment',
item_position: index,
item_serial: null,
section_type: 'floating_item',
section_position: 'body',
section_name: 'floating_item',
})
);
const img = document.createElement('img');
img.src = element.imageUrl + '?h=200&convert=webp';
img.alt = element.name || 'Floating element';
img.loading = 'lazy';
// Add click tracking
link.addEventListener('click', () => {
this.trackClick(element, cta);
});
link.appendChild(img);
div.appendChild(link);
return div;
}
getPositionClass(rankPosition, index) {
// Define positioning classes based on rankPosition
if (rankPosition === 1) {
return 'bantuan-top'; // Top position
} else if (rankPosition === 2) {
return 'bantuan-bottom'; // Bottom position
} else {
// For additional elements, distribute them evenly
return `bantuan-${index % 2 === 0 ? 'top' : 'bottom'}-${Math.floor(index / 2) + 1}`;
}
}
trackClick(element, cta) {
// Implement click tracking logic here
console.log('Floating element clicked:', {
elementId: element.Id,
elementName: cta.name,
ctaId: cta.ctaId,
targetUrl: cta.targetUrl,
});
}
// Public method to manually refresh
async refresh() {
try {
await this.fetchFloatingElements();
this.renderFloatingElements();
} catch (error) {
console.error('Failed to refresh floating elements:', error);
throw error;
}
}
// Public method to get current floating elements
getFloatingElements() {
return [...this.floatingElements];
}
}
// Initialize the component when DOM is ready
document.addEventListener('DOMContentLoaded', () => {
// Get product and table parameters from data attributes
const container = document.getElementById('bantuan-divs-container');
const product = container.getAttribute('data-product') || 'ruangguru';
const table = container.getAttribute('data-table') || 'rg_floating_icon';
new FloatingDivsComponent(product, table);
});
// Export for use in other modules if needed
if (typeof module !== 'undefined' && module.exports) {
module.exports = FloatingDivsComponent;
}
</script> <div id="wp-install-nudge" style="
position: fixed;
bottom: 0rem;
right: 0;
z-index: 999;
cursor: pointer;
"></div>
<script>
(function (w, d, s, o, f, js, fjs) {
w['Sales-Nudge-Widget'] = o; w[o] = w[o] || function () { (w[o].q = w[o].q || []).push(arguments) };
js = d.createElement(s), fjs = d.getElementsByTagName(s)[0];
js.id = o; js.src = f; js.async = 1; fjs.parentNode.insertBefore(js, fjs);
}(window, document, 'script', 'wpInstallNudge', 'https://cdn-web-2.ruangguru.com/sales-nudge/6198a95130/dist/widget.js'));
wpInstallNudge('init', { targetElementId: 'wp-install-nudge', clientTarget: 'ruangguru_blog' });
</script>
<script>
// note: disabled due to auto reload page
// var lastScrollTop = 0;
// $(window).scroll(function(event){
// var st = $(this).scrollTop();
// if (st > lastScrollTop){
// $('#wp-install-nudge').slideDown( "slow", function() {});
// } else {
// $('#wp-install-nudge').slideUp( "slow", function() {});
// }
// lastScrollTop = st;
// });
// $(document).ready(function () {
// $("#wp-install-nudge").hide();
// });
$('#wp-install-nudge').click(function(){
Analytics.track("promotion__install_nudge__click",
{
user_email: "ruangguru@blog.com",
cta_link: widgetData.dataConfig.target_link
}).catch((err) => {
console.log("tracker error", err);
});
});
</script>
</footer>
<div id="__next"></div>
<script type="speculationrules">
{"prefetch":[{"source":"document","where":{"and":[{"href_matches":"\/blog\/*"},{"not":{"href_matches":["\/blog\/wp-*.php","\/blog\/wp-admin\/*","\/blog\/wp-content\/uploads\/*","\/blog\/wp-content\/*","\/blog\/wp-content\/plugins\/*","\/blog\/wp-content\/themes\/ruangguru\/*","\/blog\/*\\?(.+)"]}},{"not":{"selector_matches":"a[rel~=\"nofollow\"]"}},{"not":{"selector_matches":".no-prefetch, .no-prefetch a"}}]},"eagerness":"conservative"}]}
</script>
<script>
async function getCtaDetails(ctaIds) {
const endpoint =
" https://gw.ruangguru.com/api/v3/rdb/p_ddgy8hjx5dxsqx/CTA/views/CTA?offset=0&limit=10&where=(ctaId,in," + ctaIds.toString() + ")";
try {
const response = await fetch(endpoint, {
headers: {
"xc-token": "-hG2nBDJzSj0agSgNtcJx97M4F02y54nUMoY6plJ",
},
});
const data = await response.json();
const ctaList = data?.list || [];
const ctaMap = new Map();
for (const ctaData of ctaList) {
ctaMap.set(ctaData.ctaId, ctaData);
}
return ctaMap;
} catch (error) {
console.error("Error fetching CTA details:", error);
return new Map();
}
}
async function replaceCTA() {
const regex = /{{cta\((‘(.*?)’|“(.*?)”)\)}}/g;
const bodyHTML = document.body.innerHTML;
const matches = Array.from(bodyHTML.matchAll(regex));
const ctaIds = matches.map((match) => {
let ctaId = match[2] ?? match[3];
return ctaId;
});
const ctaMap = await getCtaDetails(ctaIds);
const replacedHTML = bodyHTML.replace(regex, (match, _inner, ctaId1, ctaId2) => {
const ctaId = ctaId1 ?? ctaId2;
const ctaData = ctaMap.get(ctaId);
if (ctaData) {
return `<a href="https://cta.ruangguru.com/${ctaData.ctaId}" target="_${ctaData.targetType}" style="position:relative;display:inline-block;">
<img src="${ctaData.imageUrl}" loading="lazy" alt="${ctaData.altText}" />
</a>`;
} else {
return match;
}
});
document.body.innerHTML = replacedHTML;
}
</script>
<meta name="author" content="Ruangguru Tech Team">
<!-- Google Tag Manager (noscript) -->
<noscript><iframe src="https://www.googletagmanager.com/ns.html?id=GTM-PVNLZFT" height="0" width="0" style="display:none;visibility:hidden"></iframe></noscript>
<!-- Tracker -->
<script type="text/javascript" src="https://cdn-web-2.ruangguru.com/landing-page-web/public/staticpages/global-assets/js/cta.js"></script>
<script src="https://unpkg.com/@dotlottie/player-component@latest/dist/dotlottie-player.mjs" type="module"></script>
</body>
</html>