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Q.75 Which one of the following is NOT correct about antibiotic resistance mechanismin microbes?(A) Mycoplasma is naturally resistant to penicillins due to presence of R plasmid.(B) Gram–negative bacteria are impermeable […]

Q74 | Match the test in Group I with its application in Group II Group I Group II P. Ouchterlony-Fulthorpe test Q. Limulus amoebocyte lysate test R. Weil-Felix reaction test […]

Q.73 Which one of the following statements about batch culture of microbes is NOTcorrect?(A) Cells from stationary phase will show longer lag phase when inoculated in freshgrowth medium compared to […]

Q.72 Phagocytosis was first described by(A) Elie Metchnikoff(B) Robert Hooke(C) Robert Koch(D) Paul Ehrlich Elie Metchnikoff first described phagocytosis. This process, where cells engulf particles or pathogens, forms the basis of […]

Q.71 Catabolite repression in bacteria is regulated by the concentration of(A) amino acids(B) glucose(C) messenger RNA(D) lactose The correct answer is (B) glucose. Catabolite repression enables bacteria like E. coli to prioritize […]

Q.70 The correct sequence of metabolic intermediates in Krebs cycle is(A) α–ketoglutarate → fumarate → succinate → malate(B) fumarate → malate → succinate → α–ketoglutarate(C) α–ketoglutarate → succinate → fumarate […]

Q.69 Microbial plastics are made from(A) polyhydroxyalkanoates(B) polystyrene(C) polyurethane(D) polyvinyl chloride Correct Answer: (A) polyhydroxyalkanoates Microbial plastics refer to biodegradable polymers synthesized by microorganisms, primarily bacteria, as intracellular carbon and […]

Q.68 Which one of the statements about bacterial flagella is correct?(A) Flagella varies in length ranging from 0.5 to 2 μm.(B) Flagella are adjacent fibrils with regular patterns.(C) Flagella helps […]

Q.67 Which one of the following converts sulfate to hydrogen sulfide?(A) Beggiatoa(B) Desulfovibrio(C) Thiobacillus(D) Thiothrix Desulfovibrio converts sulfate to hydrogen sulfide in microbial sulfur metabolism. This process, known as dissimilatory […]

Q.66 Monkey pox is caused by a(A) double–stranded DNA virus(B) single–stranded DNA virus(C) double–stranded RNA virus(D) single–stranded RNA virus Monkeypox is caused by a double-stranded DNA virus from the Orthopoxvirus […]