生物化学答案2023

第二章测试

1.The correct description about measuring DNA denaturation are included, EXCEPT（ ）.
A:Increased buoyant density B:Decreased viscosity C:Loss of the biological activity D:Hypochromic effect
答案:D
2.Northern hybridization is used to detect（ ）.
A:DNA B:RNA C:Protein D:Carbohydrate 3. The sedimentation coefficient of the mammalian ribosome large subunit is 50S.（ ）
A:对 B:错 4.Each nucleotide consists of three components, ___，___，___.
5.State the functions of three major kinds of RNA (mRNA, tRNA and rRNA).