Molecular Biology Mock Test 2

10%

Question 1 of 10

1. Which of the following is the primary use of an expression vector?

DNA cloning

DNA purification

Protein production

DNA library

Question 1 of 10

Question 2 of 10

2. Type I topoisomerase can never decatenate catenated circular DNA?

True

False

Question 2 of 10

Question 3 of 10

3. Pulse field gel electrophoresis was developed by ____________

Schwartz and Cantor

Kary Mullis

Patrick O’ Farrell

Collins and John

Question 3 of 10

Question 4 of 10

4. Under the influence of which ion does E. coli takes up plasmid from the environment?

Sulphur

Copper

Lead

Nickel

Question 4 of 10

Question 5 of 10

5. Which of the following will migrate faster? The condition is the molecular weight of the following is equal.

Nicked circular DNA

Supercoiled circular DNA

Single stranded DNA

Double stranded DNA

Question 5 of 10

Question 6 of 10

6. How many bases are there in per turn of the B form of DNA?

10 bp

11 bp

8 bp

9 bp

Question 6 of 10

Question 7 of 10

7. Which of the following nucleotides is rich I telomere of an organism?

T, G

G, C

C, A

A, T

Question 7 of 10

Question 8 of 10

8. Which of the following does not promote stability in stem-loop structure?

A : U base pairing

Size of the loop

π orbital of aromatic ring

Length of the stem

Question 8 of 10

Question 9 of 10

9. Which of the following words represents a palindrome?

MAMA

DUCK

BOOM

MADAM

Question 9 of 10

Question 10 of 10

10. With respect to centromere which of the following is wrong?

Attaches to spindle fibres

Constricted chromosomal region

Holds the sister chromatids together

Facilitates even distribution

Question 10 of 10