141. Zero growth rate is observed during one of the phase of the bacterial growth curve______________?
A. Lag
B. Exponential growth
C. Stationary phase
D. Decline
✅ The correct answer is option Stationary phase.
Microbiology MCQs
142. A rise in the anti-HBc immunoglobulin in a patient indicates________________?
A. Acute infection
B. Carrier state
C. Prodromal phase
D. Convalescence
✅ The correct answer is option Acute infection.
143. Which of the following structures, found external to the bacterial cell wall, are involved in bacterial attachment to cell surfaces?
A. Capsule
B. Flagella
C. Pili
D. Mesosomes
✅ The correct answer is option Pili.
144. Schuffner’s dots are seen in infection due to_______________?
A. Plasmodium falciparum
B. Plasmodium vivax
C. Plasmodium malariae
D. Plasmodium ovale
✅ The correct answer is option Plasmodium vivax.
145. The following statement is true regarding fungal infection__________________?
A. Dermatophyte infection are exclusively man to animal
B. Rhinosporidium causes deep infection in man
C. albicans is not pathogenic to lab animals
D. Candida infection is usually endogenous
✅ The correct answer is option Candida infection is usually endogenous.
146. Type IV hypersensitivity reaction is mediated by which of the following________________?
A. B-cells
B. Active T cells
C. NK cells
D. Plasma cells
✅ The correct answer is option Active T cells.
147. Sporozoites of plasmodium falciparum are shaped_______________?
A. Dot
B. Comma
C. Banana
D. Sickle
✅ The correct answer is option Sickle.
148. The time gap between appearance of Koplik’s spot and cutaneous rash in measles is________________?
A. 24 Hrs
B. 3-4 days
C. 2 weeks
D. 10 days
✅ The correct answer is option 3-4 days.
149. Malaria pigment is________________?
A. Bilurubin
B. Haemoglobin
C. Iron
D. Haematin-globin pigment
✅ The correct answer is option Haematin-globin pigment.
150. Which of the following correctly indicates the infectivity of hepatitis virus in human ?
A. HBCAg
B. HBeAg
C. Anti-HBC
D. Anti-HBS
✅ The correct answer is option HBeAg.