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Q.35 If a 10 mM solution of a biomolecule in a cuvette of path length 10 mm absorbs90% of the incident light at 280 nm, the molar extinction coefficient of […]

Q.34 In a lactic acid solution at pH 4.8, the concentrations of lactic acid and lactate are0.01 M and 0.087 M, respectively. The calculated pKa of lactic acid is ________.(Round […]

Q.33 A newly identified viral protein contains one long α–helix spanning 60 amino acidresidues. The number of main chain H–bonds formed in this helix is __________.(Answer in integer) The number […]

Q.32 Which one or more of the following statements correctly describe(s) the additionof N–nucleotides during the rearrangement of the immunoglobulin heavy chain–encoding gene?(A) Addition of N–nucleotides is template encoded.(B) N–nucleotides […]

Q.31 In mammals, hematopoietic stem cells that give rise to different types of bloodcells are known as(A) totipotent stem cells.(B) pluripotent stem cells.(C) myeloid progenitor cells.(D) lymphoid progenitor cells. Hematopoietic […]

Q.30 Which one of the following metabolic intermediates is common to glycolysis,nucleotide synthesis and glycogen synthesis?(A) Citrate(B) Oxaloacetate(C) Glucose 6–phosphate(D) Glycerol 3–phosphate Glucose 6-phosphate serves as the common metabolic intermediate […]

Q.29 Mammalian cells cultured at low temperature (25 to 30 C) leads to an increasedsterol content in the membrane. Elevated sterols in the membrane results in(A) an enhancement in membrane […]

Q.28 Which one of the following pairs of amino acids is NOT incorporated in apolypeptide chain?(A) 4–Hydroxyproline and γ–carboxyglutamate(B) γ–Carboxyglutamate and desmosine(C) Ornithine and citrulline(D) 4–Hydroxyproline and 5–hydroxylysine Ornithine and […]

Q.27  Given the standard reduction potentials (E⊖) for the half-cell reactions below, the standard Gibbs free energy of the dissolution of silver chloride in water, at 298 K, is _____________ […]

Q.26 The ionic product of water at 40 °C is  2.92 ×10-14  M². The pH of water at 40 °C is ___________ (rounded off to 2 decimal places). The pH […]