Explore topic-wise MCQs in Molecular Biology.

This section includes 20 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.

Though unusual, pre – tRNA also undergo splicing. It is achieved by the help of __________

A. tRNA itself
B. Splicosome
C. RNA polymerase exonuclease activity
D. Endonuclease
Answer» E.
Discussion
2.

The 3’ CCA terminus is exceptionally added by the RNA polymerase during transcription.

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

The common sequence for all tRNAs at their 3’ end is __________

A. CCC
B. CCT
C. GGA
D. CCA
Answer» E.
Discussion
4.

RNase P is a ribozyme.

A. True
B. False
Answer» B. False
Discussion
5.

The pre – tRNA involves cleavage by __________

A. tRNA itself
B. RNase H
C. RNase P
D. RNA polymerase
Answer» D. RNA polymerase
Discussion
6.

Each tRNA is produced from different transcripts.

A. True
B. False
Answer» C.
Discussion
7.

The bacterial pre – rRNA undergo __________ cleavage.

A. 1
B. 2
C. 3
D. 4
Answer» C. 3
Discussion
8.

Which one of the following rRNA undergoes least post-transcriptional processing?

A. 28S
B. 18S
C. 5.8S
D. 5S
Answer» E.
Discussion
9.

How many pre – rRNA transcript in eukaryotes are used to produce all the different mature rRNAs?

A. 1
B. 2
C. 3
D. 4
Answer» C. 3
Discussion
10.

THE_3‚ÄÖ√Ñ√∂‚ÀÖ√Ë‚ÀÖ¬•_CCA_TERMINUS_IS_EXCEPTIONALLY_ADDED_BY_THE_RNA_POLYMERASE_DURING_TRANSCRIPTION.?$#
A. True
B. False
Answer» C.
Discussion
11.

Though unusual, pre – tRNA also undergo splicing. It is achieved by the help of __________$#

A. tRNA itself
B. Splicosome
C. RNA polymerase exonuclease activity
D. Endonuclease
Answer» E.
Discussion
12.

The common sequence for all tRNAs at their 3’ end is _________?#

A. CCC
B. CCT
C. GGA
D. CCA
Answer» E.
Discussion
13.

RNase P is a ribozyme?

A. True
B. False
Answer» B. False
Discussion
14.

The pre – tRNA involves cleavage by __________$

A. tRNA itself
B. RNase H
C. RNase P
D. RNA polymerase
Answer» D. RNA polymerase
Discussion
15.

Each tRNA is produced from different transcripts .

A. True
B. False
Answer» C.
Discussion
16.

Which of the following types of processing is not used to prepare mature rRNA?

A. Splicing
B. Methylation
C. Glycosylation
D. Conversion of uridine
Answer» B. Methylation
Discussion
17.

The bacterial pre – rRNA undergo __________ cleavage.$

A. 1
B. 2
C. 3
D. 4
Answer» C. 3
Discussion
18.

Which one of the following rRNA undergoes least post – transcriptional processing?$

A. 28S
B. 18S
C. 5.8S
D. 5S
Answer» E.
Discussion
19.

In bacterial cell the 3 rRNAs 23S, 16S and 5S are derived from different transcripts.

A. True
B. False
Answer» C.
Discussion
20.

How many pre – rRNA transcript in eukaryotes are used to produce all the different mature rRNAs?

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