Explore topic-wise MCQs in Microbiology.

This section includes 12 Mcqs, each offering curated multiple-choice questions to sharpen your Microbiology knowledge and support exam preparation. Choose a topic below to get started.

1.

In which of the following phage prophage exists as a circular form?

A. Phage lambda type
B. Phage P1 type
C. Phage T2 type
D. Phage T1 type
Answer» C. Phage T2 type
Discussion
2.

cro gene is an example of an immunity repressor.

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

repressor protein makes the cell resistant to lysis.

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

IN_WHICH_OF_THE_FOLLOWING_PHAGE_PROPHAGE_EXISTS_AS_A_CIRCULAR_FORM??$

A. Phage lambda type
B. Phage P1 type
C. Phage T2 type
D. Phage T1 type
Answer» C. Phage T2 type
Discussion
5.

The protein integrase is encoded by which of the following gene?

A. gal gene
B. lambda gene
C. bio gene
D. cro gene
Answer» C. bio gene
Discussion
6.

Which of the following phage do not cause lysogeny?

A. T2
B. T1
C. lambda
D. P1
Answer» B. T1
Discussion
7.

Which of the following gene codes for an enzyme which directs the insertion of the phage DNA into the bacterial chromosome?

A. recA gene
B. cro gene
C. int gene
D. gal gene
Answer» D. gal gene
Discussion
8.

cro gene is an example of immunity repressor.

A. True
B. False
Answer» C.
Discussion
9.

Which of the following is the characteristic of repressor protein?

A. basic protein
B. acidic protein
C. basic protein,molecular weight of 26000
D. acidic protein,molecular weight of 26000
Answer» E.
Discussion
10.

epressor protein makes the cell resistant to lysis.

A. True
B. False
Answer» B. False
Discussion
11.

In which of the following method, the viral particles are transmitted through lysis of cell?

A. Lytic cycle
B. Lysogeny
C. Replication
D. Translation
Answer» B. Lysogeny
Discussion
12.

What does a viral DNA becomes after being associated with the bacterial chromosome?

A. gene
B. prophage
C. plasmid
D. plaque
Answer» C. plasmid
Discussion