Genetics - Section 2 Multiple Questions and Answers.




1. Which of the following is the smallest of the RNAs?
A. Messenger RNA
B. Transfer RNAs
C. Ribosomal RNAs
D. All of these

2.The mRNA from which of the following would contain a poly-A tail?
A. A restriction endonuclease from E. coli
B. Bacterial alpha-amylase
C. Human insulin
D. Bacteriophage DNA ligase

3. What modified base is at the 5′ extremity of a capped eukaryotic m-RNA?
A. 1-methyl-guanosine
B. 1-methyl-adenosine
C. 2′-O-methyl-guanosine
D. 7-methyl-guanosine

4.What is the function of messenger RNA?
A. What is the function of messenger RNA?
B. It is a component of the ribosomes
C. It is a direct copy of a gene
D. It is the genetic material of some organisms

5.Retroviruses replicate via __________ intermediate
A. RNA
B. DNA
C. mRNA
D. rDNA

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