Translation II

Question 1

Which protein brings the tRNAs loaded with amino acids to the A site of the ribosome?

a. EFG

b. eIF1A

c. EFTu

d. eEF2

Answer 1

c. EFTu

Question 2

How is initiator tRNA structurally dissimilar to “normal” tRNAs?

a. Three consecutive A-T pairs in the anticodon stem

b. Formyl moiety on the anti-codon loop

c. C-A or A-U wobble mismatch on the acceptor stem

d. Three consecutive A-U pairs in the anticodon stem

e. Three consecutive G-C pairs in the anticodon stem

f. Different form of alanine

Answer 2

c. C-A or A-U wobble mismatch on the acceptor stem and e. Three consecutive G-C pairs in the anticodon stem

Question 3

What is the name of the region where the ribosome binds in bacteria translation?

The _______ - _________ region.

Answer 3

The Shine-Delgarno region

Question 4

Elongation has two opportunities for a non-cognate or near-cognate tRNA to leave the mRNA. What are these stages called?

a. the initiation stage

b. the problem solving stage

c. the initial selection stage

d. the interacting stage

e. the proofreading stage

Answer 4

a. The initial selection stage and e. The proofreading stage

Question 5

RRF stands for ______________ ______________ _____________.

Answer 5

Ribosome Recycling Factor.

Question 6

What is the equivalent of EFTu in eukaryotes?

a. eEFT1A

b. EF1a

c. eEF1A

d. eEFTu

Answer 6

c. eEf1A

Question 7

What does it mean if something is truncated?

Answer 7

Something is shortened in duration or extent.