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Berbagai jenis topoisomerase memiliki fungsi yang berbeda dan ini termasuk mengakses DNA, proses rekombinasi untai pecah, menghapus superkoil DNA, memadatkan kromosom dan detangling DNA yang saling terkait
Perbedaan utama antara keduanya adalah nukleosida tidak memiliki gugus fosfat. Bagian lain seperti molekul gula dan basa nitrogen adalah umum untuk keduanya.
Biasanya, dalam sel-sel hidup nukleotida adalah unit fungsional, bukan nukleosida.
Berikut ini yang termasuk triplet basa kodon stop adalah UAA, UGA Inisiasi, Pada RNAd terdapat kodon “start” AUG.
Berikut ini merupakan pernyataan yang benar mengenai tahap elongasi pada proses translasi, Kodon stop tidak mengkode suatu asam amino melainkan bertindak sebagai tanda untuk menghentikan proses translasi dan berakhir pula proses sintesis protein.
- Prolin = CCG, GCA
- Serin = UCG, UCC
- Glutamin = CAG
- Alanin = GCG, GCA
- Arginin = CGA, CGU
- Sistein = UGC, UGU
- Triptopan = AAG
- Tirosin = UAC,UAU
Komponen Pembangun DNA yaitu... d. gula deoksiribosa, fospat, basa adenin, guanin, sitosin, dan timin.
Sebutkan macam-macam RNA?
Jawab: mRNA rRNA tRNA
Nukleotida terdiri dari:
a. Satu molekul gula (dalam hal ini adalah "deoksiribosa")
b. Satu molekul fosfat
c. Satu molekul basa nitrogen. Basa nitrogen terdiri dari dua jenis yaitu:
1) Purin: Adenin (A) dan Guanin (G)
2) Pirimidin: sitosin (C) dan Timin (T)
http://biologigonz.blogspot.com/2014/09/bab-substansi-genetik-bologi-kelas-xii.html
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