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Q.21 Which one of the following statements about photoproteins in plants isINCORRECT?(A) Phytochromes are activated by red light(B) Phytochromes are inactivated by far–red light(C) Cryptochromes are sensitive to blue light(D) […]

Q.20 The pedigree given below shows individuals affected (shaded circles/rectangles) bychronic hypertension. Assuming 100% penetrance, the inheritance of this trait is(A) autosomal dominant(B) autosomal recessive(C) sex–linked dominant(D) sex–linked recessive Pedigree […]

Q.19 In the ‘Southern blot’ technique, which of the following reagents is used to detectthe presence of a desired DNA fragment?(A) Ethidium bromide(B) DNA probe(C) Silver nitrate(D) DNase The Southern […]

Q.18 Tetracycline binds to the(A) 30S subunit and inhibits aminoacyl–tRNA binding(B) 50S subunit and inhibits aminoacyl–tRNA binding(C) 30S subunit and prevents codon:anticodon interactions(D) 50S subunit and blocks exit of growing […]

Q.17 Match the type of DNA repair mechanism in Group I with the enzyme(s) involvedin Group IIGroup I                          […]

Q.16 Which one of the following statements is correct about solute transport acrossmembranes?(A) Passive transporters decrease the activation energy and does not facilitate thetransport of polar compounds(B) The direction in […]

Q.15 What is the splitting pattern of proton Ha of the following compound in its 1H NMRspectrum?(A) Doublet(B) Doublet of doublet(C) Multiplet(D) Triplet The splitting pattern of proton Hᵃ in the given […]

Q.14 Match the molecules in Group I with the type of bonds present in them, in GroupIIGroup I                          […]

Q.13 In mice, a trait is determined by a dominant allele Y and recessive allele y. Whatproportion of the offspring from a YY × yy cross is expected to be […]

Q.12 Determine the correctness or otherwise of the following Assertion [a] and theReason [r].Assertion [a]: Nitric oxide is involved in transient paracrine and autocrine signaling.Reason [r]: Nitric oxide is highly […]