Study Biology

Course

Genetics

Study Pack

Set 9 The Molecular Biology Of Translation

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Question 1

(Multiple Choice)

Free
A mutagen has introduced a frame- shift mutation by adding one nucleotide base. Which of the following could be a reversion mutation for this particular mutant?

A) adding 1 base only
B) deleting 1 base or adding 1 base
C) deleting 1 base or adding 3 bases
D) deleting 2 bases only
E) deleting 1 base or adding 2 bases

Answer

Question 2

(Multiple Choice)

Free
What is the cellular location of the stages of translation in bacteria and eukaryotes?

A) cytosol for bacteria and eukaryotes
B) membrane for bacteria and cytosol and rough ER for eukaryotes
C) cytosol for bacteria and cytosol, mitochondrion, and plastid for eukaryotes
D) nucleoid for bacteria and rough ER for eukaryotes
E) cytosol for bacteria and nucleus for eukaryotes

Answer

Question 3

(Multiple Choice)

Free
What result would you expect if a mutation eliminates one of the four arms of a tRNA?

A) The tRNA will not be recognized by tRNA synthetase and cannot be charged.
B) The tRNA will fit into the A site but will not release the peptide at the P site.
C) The tRNA will be charged with the wrong amino acid.
D) The tRNA will not be able to undergo traditional complementary base pairing.
E) There will be no effect on function, so long as the anticodon region is intact.

Answer