Category: GATE Biotechnology Previous Year Papers with Solutions

61. In a fed-batch culture, 200 g·L−1 glucose solution is added at a flow rate of 50 L·h−1. The initial culture volume (at quasi steady state) and the initial cell […]

59. Three distinct antigens X, Y and Z were used to raise antibodies. Antigen Z was injected in a mouse on day zero followed by the administration of antigens X […]

58. An in vitro translation system can synthesize peptides in all three reading frames of the RNA template. When 5′- UCUCUCUC—(UC)ₙ—UCUCUCUC -3′ was used as the template in this in […]

57. A synchronous culture containing 1.8 × 105 monkey kidney cells was seeded into three identical flasks. The doubling time of these cells is 24 h. After 24 h, the […]

56. Assuming random distribution of nucleotides, the average number of fragments generated upon digestion of a circular DNA of size 4.3 × 105 bp with AluI (5′-AG|CT-3′) is __________ × […]

55. A heterozygous tall plant (Tt) was crossed with a homozygous dwarf plant (tt). The resultant seeds were collected. If five seeds are chosen at random, then the probability (in […]

54. The Ki of a novel competitive inhibitor designed against an enzyme is 2.5 µM. The enzyme was assayed in the absence or presence of the inhibitor (5 µM) under […]

53. Consider the following multiple sequence alignment of four DNA sequences: A C T A A C T G A G T C A G C T Shannon’s entropy of […]

52. If A = 4 2 1 3 then A2 + 3A will be Step 1: Compute A2 A2 = A · A =[4  2 1  3]× [4  2 1  3] Matrix multiplication: A2 […]

51. The diameters of a large and a small vessel are 1.62 m and 16.2 cm, respectively. The vessels are geometrically similar and operated under similar volumetric agitated power input. […]