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Q.23 A particle starting from rest is subjected to a constant force. The plot of distance traveled along thedirection of the force as a function of time is a/an ______.(A) […]

Q.22 Which one of the following statements is INCORRECT with respect to bacterial conjugation?(A) It facilitates transfer of genetic material(B) It requires flagellum(C) It can spread antibiotic resistance(D) It can […]

Q.21 In a simple microscope, _______.(A) a lens with negative power is used(B) the focal length of the lens is less than the least distance for clear vision(C) the focal […]

Q.20 Which one of the following statements is a correct description of modes of action of taxol and colchicine? (A) Taxol causes DNA damage and colchicine prevents microtubule formation (B) […]

Q.19 Which one of the following parameters changes upon doubling the enzyme concentration? (A) KM (B) V max (C) k cat (D) Keq Vmax changes when enzyme concentration doubles in […]

Q.18 The following reaction is an example of ___________. (A) enolization (B) racemization (C) isomerization (D) epimerization The given reaction is an example of enolization, i.e. keto–enol tautomerization of a carbonyl […]

Q.17 The free energy required to synthesize a mixed anhydride bond of 1,3-bisphosphoglycerate is generated by the oxidation of ________. (A) an aldehyde to acid (B) an alcohol to acid […]

Q.16 Solutions of the following peptides are prepared separately at a concentration of 1 mM. Among these four, which one has the highest A280? (A) Ser-Val-Trp-Asp-Phe-Gly-Tyr-Trp-Ala (B) Gln-Leu-Glu-Phe-Thr-Leu-Asp-Gly-Tyr (C) Met-Gly-Val-Ileu-Asp-Ser-Ala-Trp-His […]

Q.15 Which one of the following modifications occurs both on DNA and protein? (A) ADP-ribosylation (B) Methylation (C) Sumoylation (D) Ubiquitination Methylation occurs on both DNA and proteins, making it […]

Q.14 The evolution of eyes in octopus and in human is an example of ________. (A) divergent evolution (B) convergent evolution (C) adaptive radiation (D) genetic drift The evolution of […]