Tag: GATE Life Science Previous Year Papers with Solutions

Q.72 Which one of the following is NOT involved in horizontal gene transfer? (A) Conjugation (B) Transformation (C) Transduction (D) Mutation Horizontal gene transfer (HGT) involves DNA movement between organisms […]

Q.71 Oxygenases that catalyse the initial step in the degradation of polycyclic aromatic hydrocarbons by using molecular oxygen belong to which enzyme class? (A) Hydrolase (B) Transferase (C) Lyase (D) […]

Q.70 Rheumatic fever is an example of (A) autoimmune disease (B) type IV hypersensitive reaction (C) immunodeficiency disease (D) neurodegenerative disorder Rheumatic fever is a post-infectious autoimmune condition triggered by […]

Q.69 A bacterial culture (5 ×108 cells/ml) is maintained in a chemostat of working volume 10 L. If the doubling time of the bacteria is 50 min, the required rate […]

Q.68 Which one of the following proteins does NOT bind to a gaseous ligand? (A) Leghemoglobin (B) Carbonic anhydrase (C) Nitrogenase (D) NADPH oxidase Nitrogenase is the protein among the […]

Q.67 Intergenic suppression involves mutation in (A) rRNA (B) mRNA (C) tRNA (D) cDNA Intergenic suppression occurs when a mutation in one gene restores the function lost by a mutation […]

Q.66 Most viral capsids have (A) 08 faces (B) 12 faces (C) 16 faces (D) 20 faces Viral capsids, especially icosahedral ones common in most viruses, feature 20 triangular faces […]

Q.65 Match the definition (Column I) with the type of plant community (Column II) Column I Column II P. The process of occupation of a particular area by different plant […]

Q.64 Find the right combination for P, Q, R and S with respect to gametophyte development in flowering plants. (A) P-Meiosis, Q -Generative cell , R- Pollen Tube, S- 2 […]

Q.63 Match the following diagrams P, Q, R, and S with the inflorescence type (Column I) and the corresponding plant species (Column II). P (Diagram P) Q (Diagram Q) R […]