Category: GATE Biotechnology Previous Year Papers with Solutions

Q.35 The decimal reduction time of a microbe during sterilization at 120 °C with a first-order thermal death rate constant of 1 min−1 will be ______ min (rounded off to 1 […]

Q.34 If the rate at which E. coli divides is 0.5 h−1, then its doubling time is ______ h. Calculate 0.5 h⁻¹ Rate to 1.386 Hours The doubling time for […]

Q.33 The degree of reduction (reductance) for oxalic acid (C2H2O4) is ______. The degree of reduction (reductance level) for oxalic acid (C₂H₂O₄) is 4. This value represents the average number of […]

Q.32 Let OR be the vector that is perpendicular to the vectors OP = 2i − 3j + k and OQ = −2i + j + k. If the length […]

Q.31 The six faces of a cube (die) are numbered as 1, 2, 3, 4, 5 and 6, and it is rolled once. An outcome is the observed number on […]

Q.30 The solution of the differential equation dy/dx = y + e−x that satisfies y(0) = −1/2 is __________. (A) −1/2 e−x/2 (B) −1/2 ex (C) −1/2 e−x (D) −1/2 […]

  Q.29 The value of the series 1 + sin x + cos2 x + sin3 x + … at x = π/4 is ______. (A) 1⁄√2 + 1 (B) √2⁄√2 + 1 […]

Q.28 A value of 𝑘 for which the linear equations (𝑘 − 1)𝑥 + 3𝑦 = 0 and 2𝑥 + 𝑘𝑦 = 0 have a non-zero solution is ________. (A) […]

Q.27 All pseudogenes DO NOT code for a ________. (A) protein with original function (B) protein with altered function (C) RNA with coding sequence (D) RNA with regulatory function Pseudogenes […]

Q.26 If a denatured protein of human origin is injected into a rabbit, antibodies generated will recognize the ________ structure of the protein. (A) primary (B) secondary (C) tertiary (D) […]