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MCQs

Total Questions : 15 | Page 2 of 2 pages
Question 11. What modified base is at the 5' extremity of a capped eukaryotic m-RNA?
  1.    7-methyl-guanosine
  2.    2'-O-methyl-guanosine
  3.    1-methyl-guanosine
  4.    1-methyl-adenosine
 Discuss Question
Answer: Option A. -> 7-methyl-guanosine
Question 12. Which of the following is the smallest of the RNAs?
  1.    All of these
  2.    Transfer RNAs
  3.    Ribosomal RNAs
  4.    Messenger RNA
 Discuss Question
Answer: Option B. -> Transfer RNAs
Question 13. The mRNA from which of the following would contain a poly-A tail?
  1.    Bacterial alpha-amylase
  2.    Bacteriophage DNA ligase
  3.    Human insulin
  4.    A restriction endonuclease from E. coli
 Discuss Question
Answer: Option C. -> Human insulin
Question 14. What is the function of messenger RNA?
  1.    It is a component of the ribosomes
  2.    It is the genetic material of some organisms
  3.    It carries amino acids
  4.    It is a direct copy of a gene
 Discuss Question
Answer: Option D. -> It is a direct copy of a gene
Question 15. What is the average size (in bp) of a mature t-RNA?
  1.    120 bp
  2.    80 bp
  3.    140 bp
  4.    100 bp
 Discuss Question
Answer: Option B. -> 80 bp

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