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Q.81 The concentration of sodium chloride in the cytoplasm of a Halobacterium sp. was found to be 250 ng/nl. The molarity (in M) of sodium chloride is __________. Halobacterium Cytoplasm […]

Q.80 During a bacterial growth experiment, the total viable cell count at 2 h and 6 h was 1 × 104 cells/ml and 1 × 109 cells/ml, respectively. The specific […]

Q.79 Match the media in Group I for screening microbial isolates in Group II. Group I (P) Blood agar media (Q) Minimal media (R) Skimmed milk agar media (S) Bile […]

Q.78 The length of a coding region in an mRNA is 897 bases. How many amino acids will be there in the polypeptide synthesized using this mRNA? (A) 297 (B) […]

Q.77 Match the organisms with the appropriate growth curves. (P) Bacteria (Q) Extracellular virus (R) Intracellular virus (A) P-iii, Q-i, R-ii (B) P-ii, Q-i, R-iii (C) P-ii, Q-iii, R-i (D) […]

Q.76 Match compounds in Group I with inhibitory activities in Group II. Group I (P) Vancomycin (Q) Rifampin (R) Puromycin (S) Ciprofloxacin Group II (i) Folate metabolism (ii) DNA synthesis […]

Q.75 Which one of the following microscopic techniques can be used to study the contour of proteins? (A) SEM (B) TEM (C) AFM (D) Confocal microscopy Atomic Force Microscopy (AFM) […]

Q.74 Lysozyme catalyzes the breakdown of (A) NAG-NAM (B) lipopolysaccharide (C) teichoic acid (D) lipoprotein A Lysozyme specifically catalyzes the hydrolysis of β-1,4 glycosidic bonds between N-acetylglucosamine (NAG) and N-acetylmuramic […]

Q.73 The principle of immunization was first explained by (A) Edward Jenner (B) Elie Metchnikoff (C) Louis Pasteur (D) Robert Koch Edward Jenner first explained the principle of immunization through […]

Q.72 Which one of the following is NOT involved in horizontal gene transfer? (A) Conjugation (B) Transformation (C) Transduction (D) Mutation Horizontal gene transfer (HGT) involves DNA movement between organisms […]