Molecular Biology Mock Test 2

10%

Question 1 of 10

1. The two strands of cccDNA can be easily separated without any breakage of bonds.

True

False

Question 1 of 10

Question 2 of 10

2. How is the extent of supercoiling measured?

Lk + Lk₁

Lk + Lk⁰

Lk⁰ - Lk

Lk - Lk⁰

Question 2 of 10

Question 3 of 10

3. Which of the following enzymes is not correctly paired with its function?

Topoisomerase – associated with nuclear scaffold

Methyl transferase – adds methyl group to serine

Deacetylases – removes acetyl groups from serine

Acetyl transferase – adds acetyl group to lysine

Question 3 of 10

Question 4 of 10

4. Why are chromosomes condensed?

To facilitate cell division

To facilitate accommodation

Always condensed

To facilitate distribution in daughter cells

Question 4 of 10

Question 5 of 10

5. Transformation does not involve ____________

Cutting

Expression

Recombination

Propagation

Question 5 of 10

Question 6 of 10

6. The part that plays a critical role in even distribution of parental DNA during division is ___________

Spindle fibre

Centromere

Telomere

Centrioles

Question 6 of 10

Question 7 of 10

7. Which of these factors contribute to a decrease in gene density?

Operon

Intergenic sequence

Cell size

Exon sequence

Question 7 of 10

Question 8 of 10

8. Plectonomic writhe is __________

Cylindrical axis winding

Helical turns of one strand about the other

Number of encounters of the two strands of a helix

Long axis twisted around itself

Question 8 of 10

Question 9 of 10

9. Pulse field gel electrophoresis separates DNA molecules of size ___________

40 – 50 bp

30 – 50 Kb

10 – 20 bp

20 – 30 Kb

Question 9 of 10

Question 10 of 10

10. The polymerization of the gel used in PAGE occurs between polyacrylamide and ____________

N, N – methylene bisacrylamide

Bisacrylamide

N, N – acrylamide

N – methyleneacrylamide

Question 10 of 10