大学MOOC 分子生物学(东南大学)1461812167 最新慕课完整章节测试答案

Unit 13 Pre-quiz

1、单选题：
‌The eukaryotic ribosome is composed of‏
选项：
A: 30S+50S
B: 40S+50S
C: 30s+60S
D: 40S+60S
答案: 【 40S+60S】

2、单选题：
‎Which of the following particles sendiment most rapidly in ultracentrifugation?​
选项：
A: 50KDa spherical particle
B: 50KDa flattened particle
C: 100KDa spherical particle
D: 100KDa elongated particle
答案: 【 100KDa elongated particle】

3、单选题：
‏What are the two key features of tRNA recognized by aminoacyl-tRNA synthetases?‌
选项：
A: D loop and T loop
B: acceptor stem and T loop
C: D loop and variable loop
D: acceptor stem and anticodon loop
答案: 【 acceptor stem and anticodon loop】

4、单选题：
‍Which of the foll