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Q.49 During photorespiration the reactive oxygen species, H2O2, is produced in (A) Glyoxysome (B) Lysosome (C) Peroxisome (D) Dictyosome Hydrogen peroxide (H2O2) forms during photorespiration in plant cells under high […]

Q.48 The mutagen ethidium bromide acts as a (A) Deaminating agent (B) Alkylating agent (C) Intercalating agent (D) Base analogue Ethidium bromide is a classic intercalating agent used in molecular biology […]

Q.47 The diploid chromosome number of an organism is 2n = 14. What would be the expected chromosome numbers in a nullisomic? (A) 12 (B) 13 (C) 15 (D) 16 Nullisomy […]

Q.46 The stalk with which the ovule remains attached to the placenta is called (A) Micropyle (B) Chalaza (C) Funiculus (D) Hilum Ovule anatomy questions test fundamental plant reproductive morphology critical […]

Q.45 Scatchard analysis of ligand-receptor interaction yielded the graph shown below. The affinity of the ligand-receptor interaction can be obtained from Bound / Free Bound (molar) (A) Y intercept (B) X […]

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 […]