Cytogenetics Mock Test 3

10%

Question 1 of 10

1. In an experiment you stall the ribosome with low Mg²⁺ concentration. Which of the following will then cause the release of the Peptide from the ribosome?

Adding Varomycin

Adding Urea

Adding pyromycin

Increasing the Mg²⁺ concentration

Question 1 of 10

Question 2 of 10

2. If you see a GTP bound IF2 it is _________

Not related to an initiation

After initiation

During initiation

Before initiation

Question 2 of 10

Question 3 of 10

3. Which of the following is not a part of eIF4F complex?

eIF4A

eIF4E

eIF4G

eIF4B

Question 3 of 10

Question 4 of 10

4. What is the rate of translation in prokaryotes under adequate conditions?

40 amino acid per second

30 amino acid per second

10 amino acid per second

20 amino acid per second

Question 4 of 10

Question 5 of 10

5. Which of these mutations will have the least harmful effect?

Addition of 2 bases

Deletion of 3 bases

Deletion of a chunk

Transition of one base

Question 5 of 10

Question 6 of 10

6. Methionine amino peptidase will remove the N terminal formyl methionine if the N+1 amino acid is_________

Methionine

Glycine

Tyrosine

Phenyl alanine

Question 6 of 10

Question 7 of 10

7. The ribosome slides over the mRNA translating it.

True

False

Question 7 of 10

Question 8 of 10

8. Which of the following will effectively cause normal translation from an initiation AUG, blocked by a strong AUG upstream?

In frame stop codon between two AUGs

Deletion of the GAP between the two AUGs

Hairpin loop near the 1^st AUG

No measure required

Question 8 of 10

Question 9 of 10

9. Which factors lead to disassociation of the ribosomal subunits?

Rf1 and RRF

IF-1 and IF-3

RRF and Ef-G

IF1 and IF2

Question 9 of 10

Question 10 of 10

10. Which of these is transcribed by RNA pol III?

16S

28S

5.8S

Question 10 of 10