Category: GATE Biotechnology Previous Year Papers with Solutions

Q.25 Based on their function, find the ODD one out.(A) miRNA (B) siRNA (C) shRNA (D) snRNA snRNA is the odd one out because it functions in RNA splicing within […]

Q.24 Which one of the following statements is NOT true?(A) In competitive inhibition, substrate and inhibitor compete for the same active site of an enzyme(B) Addition of a large amount […]

Q.23 Which one of the following techniques relies on the spin angular momentum of a photon?(A) CD spectroscopy (B) Fluorescence spectroscopy(C) IR spectroscopy (D) Raman spectroscopy CD spectroscopy is the […]

Q.22 Which one of the following is NOT used for the measurement of cell viability in animal cellculture?(A) Trypan blue dye exclusion (B) Tetrazolium (MTT) assay(C) LDH activity in the […]

Q.21 Junctional diversity of antibody molecules results from(A) the addition of switch region nucleotides(B) the addition of N and P nucleotides(C) the joining of V, D and J segments(D) mutations […]

Q.20 Disaccharide molecules that contain β(1 → 4) glycosidic linkage are (A) sucrose and maltose (B) sucrose and isomaltose (C) maltose and isomaltose (D) lactose and cellobiose Answer: (D) lactose […]

Q.19 Cesium chloride density gradient centrifugation is commonly used for the separation of DNAmolecules. The buoyant density, ρ, of a double stranded Cs+ DNA is given by the equationρ = […]

Q.18 Which one of the following is NOT an algorithm for building phylogenetic trees?(A) Maximum parsimony (B) Neighbor joining(C) Maximum likelihood (D) Bootstrap Bootstrap is not an algorithm for building […]

Q.17 ATP biosynthesis takes place utilizing the H+ gradient in mitochondria and chloroplasts. Identifythe correct sites of H+ gradient formation.(A) Across the outer membrane of mitochondria and across the inner […]

Q.16 Which one of the following is NOT a therapeutic agent based on nucleic acid for the treatment ofgenetic disorders?(A) Antisense oligonucleotide (B) Ribozyme(C) Aptamer (D) Avidin Answer: (D) Avidin […]