Tag: GATE Biotechnology Previous Year Papers with Solutions

Q.1 In mismatch correction repair, the parental DNA strand is distinguished from the daughter strand by (A) acetylation (B) phosphorylation (C) methylation (D) glycosylation In mismatch repair, the parental DNA […]

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. […]