生物化学答案2023

第九章测试

1.The template strand of DNA is 5’-ATTCAG-3’, its transcript is（ ）.
A:5’ -CTGAAT-3’ B:5’ -CUGAAU-3’ C:5’ -GACTTA-3’ D:5’ -UAAGUC-3’
答案:B
2.The operon model proposes three elements, EXCEPT（ ）.
A:A regulator gene B:An operator site C:A set of structural genes D:SD sequence 3.The RNA polymerase holoenzyme of prokaryotes is composed of several subunits, such as α₂ββω（ ）.
A:对 B:错 4.Most mRNAs of eukaryotes are polycistron, while most mRNAs of prokaryotes are monocistron（ ）.
A:错 B:对 5.List the similarities and differences between transcription and replication.