Category: GATE Biotechnology Previous Year Papers with Solutions

Q.20 An example of a program for constructing a phylogenetic tree is (A) phylip (B) phrap (C) prodom (D) PHDsec Phylogenetic trees reveal evolutionary relationships among organisms, essential for microbial […]

Q.19 An example of a derived protein structure database is (A) Pfam (B) SCOP (C) GEO (D) Prosite Derived protein structure databases process primary experimental data (PDB coordinates) into hierarchical […]

Q.18 Identify the statement that is NOT applicable to an enzyme catalyzed reaction. (A) Enzyme catalysis involves propinquity effects (B) The binding of substrate to the active site causes a […]

Q.17 The activity of an enzyme is expressed in International Units (IU). However, the S.I. unit for enzyme activity is Katal. One Katal is (A) 1.66 × 104 IU (B) […]

Q.16 Which one of the following is NOT a protoplast fusion inducing agent? (A) Inactivated Sendai virus (B) Ca2+ at alkaline pH (C) Polyethylene glycol (D) Colchicine Protoplast fusion merges […]

Q.15 During photorespiration under low CO2 and high O2 levels, O2 reacts with ribulose 1,5- bisphosphate to yield (A) one molecule each of 3-phosphoglycerate and 2-phosphoglycolate (B) two molecules of […]

Q.14 The direction of shell coiling in the snail Limnaea peregra is a classic example of (A) chromosomal inheritance (B) extra-chromosomal inheritance (C) chromosomal translocation (D) homologous recombination Shell coiling […]

Q.13 Protein-DNA interactions in vivo can be studied by (A) gel shift assay (B) Southern hybridization (C) chromatin immunoprecipitation assay (D) fluorescence in situ hybridization assay Protein-DNA interactions drive gene […]

Q.12 A truncated polypeptide is synthesized due to a nonsense mutation. Where would you introduce another mutation to obtain a full-length polypeptide? (A) Ribosomal protein gene (B) Transfer RNA gene […]

Q.11 A protein is phosphorylated at a serine residue. A phosphomimic mutant of the protein can be generated by substituting that serine with (A) glycine (B) alanine (C) aspartate (D) […]