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23. A population of bacterial cells grows from 10,000 to 100,000,000 cells in 6 hours. The generation time of the bacterial population is __________ min. (rounded off to 2 decimals) […]

22. Which of the following statement(s) is/are CORRECT about Deinococcus radiodurans?  (A) It has a cell wall consisting of several layers, including an outer membrane that lacks lipid A (B) […]

21. Mechanism of antibacterial action of polymyxins relies on the (A) inhibition of 30S ribosomal subunit (B) disruption of peptidoglycan synthesis (C) inhibition of DNA replication of bacteria (D) disruption […]

20. The final stage of peptidoglycan (PG) biosynthesis is marked by PG cross-link formation and remodeling. Which of the following enzymes does NOT take part in these processes? (A) Transglycosidases […]

19. Which of the following activities is NOT possessed by the human immunodeficiency virus-1 reverse transcriptase? (A) Synthesis of DNA from RNA (B) Synthesis of DNA from DNA (C) Degradation […]

18. A bacterial cell suspension contains 2×10⁵ cells mL⁻¹. The volume of this suspension required to obtain 1.4×10⁶ cells is __________ mL (rounded off to the nearest integer). Bacterial Cell […]

17. Which of the following is/are true about Retrovirus? (A) It contains double-stranded RNA genome (B) It can cause cancer (C) It contains reverse transcriptase (D) It contains double-stranded DNA […]

16. Match the morphology in Group I with the corresponding microorganism in Group II Group I Group II P. Coccus 1. Treponema Q. Rod 2. Bacillus R. Comma 3. Neisseria […]

15. If a bacterial culture with a doubling time of 30 minutes starts with two cells, then the number of cells after 4 hours are ______. Bacterial Growth Calculation: Number […]