Category: GATE Biotechnology Previous Year Papers with Solutions

Q.25 The formation of peptide cross-links between adjacent glycan chains in cell wall synthesis is called (A) Transglycosylation (B) Autoglycosylation (C) Autopeptidation (D) Transpeptidation Peptide Cross-Links in Bacterial Cell Wall: […]

Q.24 Nuclease-hypersensitive sites in the chromosomes are sites that appear to be (A) H2 and H4 histone free (B) H1 and H2 histone free (C) H3 and H4 histone free […]

Q.23 Oxidation reduction reactions with positive standard redox potential (ΔE°′) have (A) Positive ΔG°′ (B) Negative ΔG°′ (C) Positive ΔE°′ (D) Negative ΔE°′ Oxidation-Reduction Reactions: Positive ΔE°′ Means Negative ΔG°′ […]

Q.22 The degree of inhibition for an enzyme catalyzed reaction at a particular inhibitor concentration is independent of initial substrate concentration. The inhibition follows (A) Competitive inhibition (B) Mixed inhibition […]

Q.21 Identify the enzyme that catalyzes the following reaction α-Ketoglutarate + NADH + NH4+ + H+ →  Glutamate + NAD+ + H2O (A) Glutamate synthetase (B) Glutamate oxoglutarate aminotransferase (C) […]

Q.20 During lactic acid fermentation, net yield of ATP and NADH per mole of glucose is (A) 2 ATP and 2 NADH (B) 2 ATP and 0 NADH (C) 4 […]

Q.19 In a chemostat operating under steady state, a bacterial culture can be grown at dilution rate higher than maximum growth rate by (A) Partial cell recycling (B) Using sub-optimal […]

Q.18 Expressed Sequence Tag is defined as (A) A partial sequence of a cDNA randomly selected from cDNA library (B) The characteristic gene expressed in the cell (C) The protein […]

Q.17 Accession number is a unique identification assigned to a (A) Single database entry for DNA/Protein (B) Single database entry for DNA only (C) Single database entry for Protein only […]

Q.16 Somatic cell gene transfer is used for P. Transgenic animal production Q. Transgenic diploid cell production R. In-vitro fertilization S. Classical breeding of farm animals (A) P, R and […]