Tag: GATE Biotechnology Previous Year Papers with Solutions

Q.21 Which of the following features is/are used to distinguish Archaea from Bacteria? (A) Gram-staining (B) Peptidoglycan in the cell wall (C) Presence of N-acetylglucosamine (D) 16S rRNA sequences Archaea […]

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 […]