Explore topic-wise MCQs in Molecular Biology.

This section includes 11 Mcqs, each offering curated multiple-choice questions to sharpen your Molecular Biology knowledge and support exam preparation. Choose a topic below to get started.

1.

The requirements of polyadenylation site does not include __________

A. 5’….AATAAA….3’ sequence
B. GU rich region downstream
C. Cleavage site of “C/TA”
D. Polyadenylation after GU rich region at cleavage site
Answer» E.
Discussion
2.

The poly A adding site is 5’….GA….3’.

A. True
B. False
Answer» C.
Discussion
3.

The guanyl residue added during capping is added in the same direction as the other nucleotides.

A. True
B. False
Answer» C.
Discussion
4.

The requirements of polyadenylation site does not include _________?

A. 5’….AATAAA….3’ sequence
B. GU rich region downstream
C. Cleavage site of “C/TA”
D. Polyadenylation after GU rich region at cleavage site
Answer» E.
Discussion
5.

The poly A adding site is 5’….GA….3’.$

A. True
B. False
Answer» C.
Discussion
6.

The specific sequence present in the DNA for the triggering of polyadenylation is __________

A. 5’….AAUAAA….3’
B. 3’….AATAAA….5’
C. 5’….TTATTT….3’
D. 3’….TTATTT….5’
Answer» E.
Discussion
7.

During capping the methylated penultimate base is known as the __________

A. Cap 1
B. Cap 2
C. Cap G
D. Cap 0
Answer» B. Cap 2
Discussion
8.

How many methylated nucleotides are observed during capping?

A. 1
B. 2
C. 3
D. 4
Answer» C. 3
Discussion
9.

The guanyl residue added during capping is added in the same direction as the other nucleotides

A. True
B. False
Answer» C.
Discussion
10.

The enzyme used for capping mRNA is a __________

A. Kinase
B. Isomerase
C. Transferase
D. Polymerase
Answer» D. Polymerase
Discussion
11.

The transcription starts with a purine that ends with a __________

A. Nucleoside
B. Sugar
C. Phosphate
D. Triphosphate
Answer» E.
Discussion