Category: GATE Biotechnology Previous Year Papers with Solutions

Q.20 Which one of the following hosts is used in mammalian cell culture for the production of glycosylated recombinant therapeutic proteins? (A) Pichia pastoris (B) Sf9 cells (C) Escherichia coli […]

Q.19 Correctly match the following Product classes with their representative Products. Product class                           Product P. Biofuel      […]

Q.18 Correctly match the following Monosaccharides with their respective Epimers. Monosaccharide                          Epimer P. D-mannose          […]

Q.17 Which one of the following coenzymes is utilised by alanine racemase for the conversion of L-Alanine to D-Alanine? (A) Pyridoxal phosphate (B) Thiamine pyrophosphate (C) Tetrahydrofolate (D) Flavin mononucleotide […]

Q.16 Which one of the following is true for piRNAs? (A) piRNAs silence transposable elements in germ cells (B) piRNA is the abbreviation of P-element interacting RNA (C) piRNAs modify […]

Q.15 The diversity in T-cell receptors is generated by (A) gene rearrangements (B) somatic hypermutation of rearranged V region (C) gene conversion (D) class switching T-cell receptors (TCRs) achieve immense […]

Q.14 The minimum value of the function 𝑓(𝑥) = 𝑥 +4/𝑥 for 𝑥 > 0 is (A) 1 (B) 2 (C) 3 (D) 4 The function f(x)=x+4/x for x>0 achieves […]

Q.13 Let 𝑦(𝑡) be a bacterial population whose growth is given by dy/dt=𝜆(𝑦 + 2) where 𝜆 is the growth rate constant. If 𝑦(0) = 1 and 𝑦(1) = 4, […]

Q.12 Corynebacterium diphtheriae causes diphtheriain humans, only when thisbacterium is infected by (A) phage β (B) epsilon phage (C) T4 phage (D) lambda phage Corynebacterium diphtheriae becomes pathogenic and causes […]

Q.11 Koch’s postulate was established by Robert Koch while working on a disease caused by (A) Mycobacterium tuberculosis (B) Bacillus anthracis (C) Streptococcus pneumoniae (D) Bacillus subtilis Koch’s postulates, a […]