Translation and Regulation – Section 1

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  • / Author: GkFeed Team

11. What is the direct cause of cell death by diphtheria toxin?

A. Formation of an ion channel in the cell membrane
B. Inactivation of a translational elongation factor
C. Induction of apoptosis
D. None of the above

Correct Answer: B. Inactivation of a translational elongation factor

12. The development of global regulatory systems in prokaryotes

A. determines the exact location of the cell on the globe
B. aids in DNA replication
C. determines the exact location of the replication site
D. regulates many genes under varying environmental conditions

Correct Answer: D. regulates many genes under varying environmental conditions

13. The interaction between the mRNA and tRNA determined the position of amino acid in a polypeptide sequence. This is called the

A. stagerivity
B. Wobble hypothesis
C. promiscuity
D. adaptor hypothesis

Correct Answer: D. adaptor hypothesis

14. What are the Svedberg values for the subunits of the 70S ribosomes of E. colli?

A. 40S and 30S
B. 50S and 20S
C. 50S and 30S
D. 40S and 20S

Correct Answer: C. 50S and 30S

15. Which of the following three codons translate as serine (Ser)?

A. AGU
B. CGA
C. CAU
D. AUG

Correct Answer: A. AGU
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