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Q.65 The active site in the alpha/beta barrel structures is usually located (A) inside the barrel                              […]

Q.64 The amino acid substitution matrices in decreasing order of stringency for comparing protein sequences are (A) PAM250, PAM120, PAM100 (B) PAM100, PAM120, PAM250 (C) PAM250, PAM100, PAM120 (D) PAM120, […]

Q.63 A dioecious plant has XX sexual genotype for female and XY for male. After double fertilization, what would be the genotype of the embryos and endosperms? (A) 100% ovules […]

Q.62 Which of the following statements with respect to the orientation of the nitrogenous bases to the pentose sugars, and the puckering of the sugar, is correct? (A) Anti, and […]

Q.61 If protoplasts are placed in distilled water, they swell and burst as a result of endosmosis. The plot representing the kinetics of burst is Introduction When protoplasts (plant cells […]

Q.60 If a plant is shifted to cold temperature, which of the following changes would take place in its membrane? (A) Ratio of unsaturated to saturated fatty acids would increase […]

Q.59 Lysine is being produced in a lab-scale reactor by a threonine auxotroph. After 2 weeks of operation it was observed that the concentration of lysine in the reactor was […]

Q.58 The length of the minimum unique stretch of DNA sequence that can be found only once in a 3 billion base pairs long genome is (A) 14 (B) 15 […]

Q.57 In a genetic cross between the genotypes WWXX and wwxx, the following phenotypic distributions were observed among the F2 progeny: WX, 562; wx, 158; Wx, 38; and wX, 42. […]

Q.56 Match the immunoglobulin class in Group I with its properties in Group II Group I                   Group II P. IgG      […]