Molecular Biology  MCQs

Molecular Biology  MCQs

1. Which of the following does not contain introns?

a) processed DNA

b) RNA

c) primary RNA transcript

d) processed DNA & RNA

Answer - Click Here:
C

2. At the end of the translation process we get?

a) amino acids

b) polypeptides

c) lipids

d) carbohydrates

Answer - Click Here:
B

3. Ozone depletion can be prevented by …

a) decrease the usage of CFC products

b) fossil fuels are used in factories

c) use of scrubbers

d) none of these

Answer - Click Here:
A

4. First DNA glycosylase is …

a) uracil DNA glycosylase

b) thymine DNA glycosylase

c) adenine DNA glycosylase

d) none of these

Answer - Click Here:
A

5. Which of the following is required for DNA replication?

a) primase

b) helicase

c) DNA polymerase

d) all of these

Answer - Click Here:
D

6. What is used to bind GTP?

a) oncogene R

b) oncogene D

c) oncogene

d) none of these

Answer - Click Here:
A

7. How many RNA polymarses are there in the bacterial system?

a) 1

b) 2

c) 3

d) 4

Answer - Click Here:
C

8. All viruses consisted of ….

a) nucleic acid and protein coat

b) DNA & RNA coat

c) DNA protein coat

d) none of these

Answer - Click Here:
A

9. For polypeptide chain formation it’s genetic information is carried out   by _____  to the ribosome?

a) tRNA

b) mRNA

c) rRNA

d) none of these

Answer - Click Here:
B

10. Which  of the following has single subunit?

a) bacillus subtilis polymerase

b)  E.coli

c) T7 RNA polymerase

d) all of these

Answer - Click Here:
C

11. Which one is the negative regulator of trp operon?

a) lactose

b) allolactose

c) C-AMP

d) tryphotophan

Answer - Click Here:
D

12. E.coli RNA polymerase conisits of _____ subunits?

a) 1

b) 4

c) 5

d) 3

Answer - Click Here:
C