Explore topic-wise MCQs in Microbiology.

This section includes 16 Mcqs, each offering curated multiple-choice questions to sharpen your Microbiology knowledge and support exam preparation. Choose a topic below to get started.

1.

HIV can infect
A. Microglial cells
B. M (membranous) cells
C. CD4 + T lymphocytes
D. All of these
Answer» E.
Discussion
2.

Parasitic infection/s frequently observed in HIV disease is / are.
A. cryptosporidiosis
B. toxoplasmosis
C. isosporiasis
D. all of these
Answer» E.
Discussion
3.

What is the average incubation period for development of AIDS?
A. One year
B. Five years
C. Ten years
D. Twenty years
Answer» D. Twenty years
Discussion
4.

The cells most oftenly infected by HIV are
A. Null cells
B. CD8 + T lymphocytes
C. CD4 + T lymphocytes
D. None of these
Answer» D. None of these
Discussion
5.

Which of the following is the spike antigen of HIV-I?
A. gp 120
B. gp 140
C. gp 36
D. gp 41
Answer» B. gp 140
Discussion
6.

Fungal infection/s frequently observed in HIV disease is /are:
A. candidiasis
B. cryptococcosis
C. aspergillosis
D. all of these
Answer» E.
Discussion
7.

The screening test/s for diagnosis of HIV infection is/are
A. ELISA
B. Latex agglutination
C. Dot blot assay
D. all of these
Answer» E.
Discussion
8.

The commonest opportunistic infection in AIDS patient in India is
A. cryptosporidiosis
B. toxoplasmosis
C. tuberculosis
D. cryptococcosis
Answer» D. cryptococcosis
Discussion
9.

The problem(s) associated with development of a vaccine against HIV is/are
A. antibody alone may be insufficient
B. rapid mutation of HIV
C. virus can spread from cell to cell by fusion to produce syncytia
D. all of these
Answer» E.
Discussion
10.

The commonest mode of transmission of HIV is
A. parenteral
B. perintal
C. sexual
D. oral
Answer» D. oral
Discussion
11.

HIV belongs to the family retroviridae and sub-family
A. Oncovirinae
B. Lentivirinae
C. Spumavirinae
D. None of these
Answer» C. Spumavirinae
Discussion
12.

Which of the following is transmembrane pedicle antigen of HIV-I?
A. gp 41
B. gp 140
C. gp l20
D. gp 36
Answer» B. gp 140
Discussion
13.

HIV or Human Immunodeficiency Virus is considered unique because each virus contains:
A. more than 100 copies of the viral genome
B. a genome made up of both DNA and RNA components
C. a viral enzyme known as reverse transcriptase
D. sticky proteins that allow it to bind tightly to host cells
Answer» D. sticky proteins that allow it to bind tightly to host cells
Discussion
14.

The confirmatory test(s) for HIV infection is/are
A. virus isolation
B. detection of p24 antigen
C. detection of viral nucleic acid
D. all of the above
Answer» E.
Discussion
15.

The commonest bacterial infection in HIV disease is/are
A. mycobacterial infection
B. salmonella infection
C. bartonella infection
D. all of these
Answer» B. salmonella infection
Discussion
16.

Viral infections frequently observed in HIV disease is /are
A. herpes simplex
B. varicella- zoster
C. cytomegalo virus
D. all of these
Answer» E.
Discussion