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Q.78 Which of the following event(s) occur(s) during translation in prokaryotes?(A) tRNA binding to the start codon of mRNA on the 30s subunit of ribosome(B) Anticodon of tRNA binding to […]

Q.77 Which of the following cocci is/are examples of division in one plane?(A) Staphylococci(B) Streptococci(C) Micrococci(D) Diplococci Streptococci divide in one plane, forming chains, making option (B) correct. Diplococci also […]

Q.76 Which of the following is/are active transport mechanism(s) in prokaryotes wherethe substance is chemically altered during transport across the membrane?(A) Group translocation(B) Simple diffusion(C) Facilitated diffusion(D) Osmosis Answer: (A) […]

Q.75 Which one of the following redox couples has the highest tendency to donateelectrons?(A) Fumarate / succinate(B) NAD+ / NADH(C) FAD / FADH(D) Pyruvate / lactate NAD⁺/NADH has the highest […]

Q.74 Match the antibiotics in Group I with the microorganisms that produce them in Group II. Group I Group II (P) Streptomycin (i) Streptomyces griseus (Q) Bacitracin (ii) Bacillus licheniformis […]

Q.73 Which one of the following represents the abundance of the organisms found insoil?(A) Fungi > Aerobic bacteria > Anaerobic bacteria(B) Aerobic bacteria > Fungi > Anaerobic bacteria(C) Aerobic bacteria […]

Q.72 Which one of the following use inorganic compounds as an energy source?(A) Heterotrophs(B) Chemolithotrophs(C) Chemoorganotrophs(D) Photoheterotrophs Chemolithotrophs use inorganic compounds as their energy source. The correct answer to the question […]

Q.71 Which one of the following double–stranded sequences will NOT be recognized bya Type IIP restriction endonuclease?(A) 5′—GGTACC—3′3′—CCTAGG—5′(B) 5′—GGATCC—3′3′—CCTAGG—5′(C) 5′—CATATG—3′3′—GTATAC—5′(D) 5′—GATTTC—3′3′—CTAAAG—5′ Option (D) is the correct answer. Type IIP restriction endonucleases […]

Q.70 The most abundant class of immunoglobulins in serum is __________.(A) IgM(B) IgA(C) IgD(D) IgG Answer: (D) IgG IgG is the most abundant immunoglobulin in human serum, comprising 75-80% of […]

Q.69 In which of following processes, glutaraldehyde is used as a sterilizing agent?(A) Pasteurization(B) Incineration(C) Cold sterilization(D) Autoclaving Answer: (C) Cold sterilization Glutaraldehyde serves as a chemical sterilizing agent specifically […]