Gene Expression(Cell Biology ) Questions and answers for exam Preparation

Question 1. Synthesis of which of following is directed by gene expression?

chromosomes
immune system
other genes
proteins

Explanation:-

Answer: Option D. -> proteins
Answer: (d).proteins

Question 2. Which of following proteins are required to bring translation initiator complex together?

initiator proteins
translation proteins
spliceosomes
ribozymes

Explanation:-

Answer: Option A. -> initiator proteins
Answer: (a).initiator proteins

Question 3. Which of following mutations changes one amino acid to another?

missense mutation
point mutation
substitution
addition

Explanation:-

Answer: Option A. -> missense mutation
Answer: (a).missense mutation

Question 4. Which of following is not a part of translation initiator complex?

small ribosomal subunit
large ribosomal subunit
DNA
tRNA

Explanation:-

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

Question 5. Which of following can cause mutations?

heat
mutagens
water
malnourishment

Explanation:-

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

Question 6. Modified version of which of following acts as 'cap'?

guanine
cytosine
adenine
uracil

Explanation:-

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

Question 7. What happens at 3 prime ends of mRNA?

deletion of end
addition of cap
addition of poly t tail
addition of poly a tail

Explanation:-

Answer: Option D. -> addition of poly a tail
Answer: (d).addition of poly a tail

Question 8. How many types of RNA polymerase is present in prokaryotes?

1
2
3
4

Explanation:-

Answer: Option A. -> 1
Answer: (a).1

Question 9. Discrete functional and structural regions in proteins are called

beads
fingers
motifs
domains

Explanation:-

Answer: Option D. -> domains
Answer: (d).domains

Question 10. Initial mRNA that has not yet been translated to a protein is called

initial transcript
new RNA
primary transcript
naive rRNA

Explanation:-

Answer: Option C. -> primary transcript
Answer: (c).primary transcript