Category: GATE Biotechnology Previous Year Papers with Solutions

Q.25 In a batch culture, the specific rate of substrate utilization is 0.25 g (g cell mass)−1 h−1 and specific rate of product formation is 0.215 g (g cell mass)−1 […]

Q.24 Calculate the percentage sequence identity for the pairwise alignment given below. __________ H E L L O – Y E L L O W Calculate Percentage Sequence Identity: HELLO- […]

Q.23 A batch bioreactor is to be scaled up from 10 to 10,000 liters. The diameter of the large bioreactor is 10 times that of the small bioreactor. The agitator […]

Q.22 A chemostat is operated at a dilution rate of 0.6 h−1. At steady state, the biomass concentration in the exit stream was found to be 30 g l−1. The […]

Q.21 A callus of 5 g dry weight was inoculated on semi-solid medium for growth. The dry weight of the callus was found to increase by 1.5 fold after 10 […]

Q.20 One of the eigenvalues of P = [ 10  −4 18  −12 ] is 2 4 6 8 Introduction Eigenvalues are a fundamental topic in linear algebra and appear frequently in […]

Q.19 Hypophosphatemia is manifested by an X-linked dominant allele. What proportion of the offsprings from a normal male and an affected heterozygous female will manifest the disease? ½ sons and […]

Q.18 If u = log (ex + ey), then ∂u/∂x + ∂u/∂y = ex + ey ex − ey 1 / (ex + ey) 1 Introduction Partial differentiation is a […]

Q.17 If P = [ 1  1 2  2 ], Q = [ 2  1 2  2 ] and R = [ 3  0 1  3 ], which one of the following statements is TRUE? PQ […]

Q.16 The suitable substitution matrix to align closely related sequences is (A) PAM 250 or BLOSSUM 80 (B) PAM 40 or BLOSSUM 80 (C) PAM 120 or BLOSSUM 40 (D) […]