生物化学答案2023

第十章测试

1.Which of the following steps is NOT included in the protein biosynthesis?（ ）
A:Elongation of polypeptide chain B:Activation of amino acids C:Post-transcriptional processing D:Initiation of protein biosynthesis
答案:C
2.Energy for the movement of peptidyl-tRNA from the A-site to the P-site is provided by（ ）.
A:Pyrophosphate B:none C:GTP D:ATP 3.Promoter is a short sequence rich in purines, lies 5’to the AUG initiation codon and is complementary to part of the 16S rRNA in the small ribosomal subunit（ ）.
A:对 B:错 4.The energy required for protein synthesis is ATP（ ）.
A:错 B:对 5.The first added amino acyl group in the initiation stage of protein synthesis is ___ in prokaryotes or ___ in eukaryotes.
6.How many properties of genetic codon?