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Q.44 The kinetics of an enzyme in the presence (+I) or absence (−I) of a reversible inhibitor is described in the following graph. If concentration of the reversible inhibitor in the […]

Q.43 Match the antibiotics in Group I with their mechanism of action in Group II Group I Group II P. Tetracyclines 1. Inhibits bacterial protein synthesis by blocking peptidyl transfer Q. […]

Q.42 Match the enzymes in Group I with their corresponding activity in Group II Group I Group II P. Flippase 1. Catalyzes the movement of any phospholipid across the lipid bilayer […]

Q.41 The actual free energy change of a given biochemical reaction carried out under standard conditions with 1 M initial concentration of each of the reactants and products will be […]

Q.40 Pick the correctly matched pairs. P. Immature B cells — Terminal deoxynucleotidyl transferase Q. Activated B cells — Class switching R. Pre B cells — Surrogate light chain S. Mature […]

Q.39 β-oxidation of a 16 carbon fatty acid and a 17 carbon fatty acid leads to formation of (A) (8 Acetyl CoA) and (8 Acetyl CoA + CO2), respectively (B) (5 […]

Q.38 The CORRECT pair of amino-acid sequence and the corresponding target organelle is (A) KDEL – Golgi (B) K-K/R-X-K/R – Lysosome (C) SKL – Peroxisome (D) NPVY – Endoplasmic reticulum […]

Q.36 An amino-acid has one proton donating group in the side chain (R). The pKCOOH, pKNH2 and pKR values for this amino-acid are 2.19, 9.67 and 4.25, respectively. Which one of […]

Q.37 Which one of the following bacterial toxins does NOT have ADP-ribosyl transferase activity? (A) Pertussis toxin (B) Diphtheria toxin (C) Pseudomonas Exotoxin A (D) S. aureus α-toxin The correct answer […]

Q.35 The membrane of mature B cells have (A) both IgG and IgM (B) both IgG and IgD (C) both IgM and IgE (D) both IgM and IgD Mature B cells […]