Molecular Basis Of Inheritance(Cell Biology ) Questions and answers for exam Preparation

Question 1. Histones are made up of approximately how many amino acids?

200
100
500
10

Explanation:-

Answer: Option B. -> 100
Answer: (b).100

Question 2. Which of following binds to and stabilizes single-stranded DNA until it is used as a template?

helicase
topoisomerase
DNA polymerase I
single strand binding proteins

Explanation:-

Answer: Option D. -> single strand binding proteins
Answer: (d).single strand binding proteins

Question 3. What is initial error rate of DNA replication?

10⁵
10²
10⁹
10¹

Explanation:-

Answer: Option A. -> 10⁵
Answer: (a).10⁵

Question 4. Which of following bases binds with adenine?

thymine
cytosine
guanine
uracil

Explanation:-

Answer: Option A. -> thymine
Answer: (a).thymine

Question 5. What is rate of elongation of DNA in bacteria?

100 per second
500 per second
20 per second
1 per second

Explanation:-

Answer: Option B. -> 500 per second
Answer: (b).500 per second

Question 6. Which of following bases binds with Uracil in RNA?

guanine
cytosine
adenine
thymine

Explanation:-

Answer: Option C. -> adenine
Answer: (c).adenine

Question 7. Which of following is not a part of three models that were proposed for DNA replication?

semi conservative
destructive
conservative
dispersive

Explanation:-

Answer: Option B. -> destructive
Answer: (b).destructive

Question 8. In which of following directions, two backbones of DNA molecule runs?

parallel
anti parallel
intersecting
rounded

Explanation:-

Answer: Option B. -> anti parallel
Answer: (b).anti parallel

Question 9. Which of following proteins are responsible for first level packaging of DNA?

hemoglobin
chromatin
histones
helicase

Explanation:-

Answer: Option C. -> histones
Answer: (c).histones

Question 10. How many DNA repair enzymes have been found so far in E Coli?

1000
130
32
12

Explanation:-

Answer: Option B. -> 130
Answer: (b).130