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Q.44 Match the following Group I P) Tyrosine hydroxylation Q) Tyrosine iodination R) Tyrosine phosphorylation S) Tyrosine oxidation Group II 1) Thyroxine 2) T cell Receptor 3) DOPA 4) Estradiol receptor […]

Q.43 Collagen, α-keratin and tropomyosin have common structural features. They are P) disulfide bridges to neighboring proteins. Q) repeating sequences of amino acids R) a high β-sheet content S) superhelical coiling […]

Q.42 Match the following: Group I Group II P) Polynucleotide kinase 1) ATPase Q) Fluoride 2) GTPase R) Ras 3) Transketolase S) lac operon 4) Enolase 5) 5′ end of […]

Q.41 Four identical PCR reactions were carried out in tubes named I, II, III and IV. Besides the usual mix of dNTPs, each of the tubes respectively contained γ-32P dATP, […]

Q.40 Three samples of antibodies were electrophoresed under denaturing and reducing conditions on a 15% acrylamide gel, followed by staining with Coomassie blue dye. Samples 1, 2 and 3 showed […]

Q.39 Match the items in Group I with those in Group II Group I Group II P) Progesterone 1) Peptide Q) Dopamine 2) Fatty acid R) Vasopressin 3) Carbohydrate S) […]

Q.38 In the following enzyme-catalyzed reaction which follows Michaelis–Menten kinetics: E + S ⇌ k1     k−1 ES  →k2  E + P Km is equal to Options: (A) k−1 / (k1k2) (B) […]

Q.37 Two purified DNA samples A and B contain equal number of base pairs. Each of these DNA samples has one site each for EcoRI and BamHI restriction enzymes. Complete […]

Q.36 Match P, Q, R and S with the appropriate numbers 1 to 6 on the right Left Right P) Basophils 1) Perforin Q) T cells 2) Phagocytosis R) B […]

Q.35 Valinomycin, a cyclic peptide antibiotic, facilitates the transport of which one of the following ions? Options: (A) K+ (B) Ca2+ (C) Na+ (D) H+ Valinomycin, a 12-membered cyclic depsipeptide […]