Tag: GATE Life Science Previous Year Papers with Solutions

Q.77 Which one of the following forms of the same DNA molecule would bind maximum ethidium bromide? (A) Negatively supercoiled (B) Covalently closed relaxed circle (C) Linear (D) Positively supercoiled Negatively […]

Q.76 Four Hfr strains of E. coli were generated from the same F+ strain. The Hfr strains donated markers in the following order: Strain 1: DQWMT; Strain 2: AXPTM; Strain 3: […]

Q.75 Which one of the following immersion oils would you use to get the best resolution in a light microscope (with 100× objective)? (A) an oil with refractive index of 1.6 […]

Q.74 Which of the following are expected to be the abundant inhabitants of a nitrate- and sulfate-rich soil naturally depleted for oxygen? (A) Pseudomonas and Azotobacter (B) Pseudomonas and Desulfovibrio (C) […]

Q.73 The cis–trans test can determine whether a gene codes for (A) an activator or a repressor (B) an RNA or a protein (C) a protein with the same or different […]

Q.72 The synthesis of an immunoglobulin in either a secretory or membrane bound form is governed by (A) allelic exclusion (B) class switching (C) differential RNA processing (D) affinity maturation […]

Q.71 A newly emerged variant of Influenza virus can be selectively propagated from the mixed population by addition of (A) Ganciclovir (B) Tamiflu (C) Interferon gamma (D) Neutralizing antibody Neutralizing antibodies […]

Q.70 Catabolite repression allows cells to save energy by (A) inactivating catabolic enzymes (B) inhibiting synthesis of total RNA (C) regulating expression of genes required for utilization of less-efficient metabolites (D) […]

Q.69 The active transport of solute in the cell is characterized by (A) its uptake along the concentration gradient utilizing energy (B) requirement of a carrier to support transport along the […]

Q.68 Which one of the following statements is NOT associated with contributions of Louis Pasteur? (A) Anthrax is caused by anthrax bacillus (B) Bacteria causing food spoilage come from air (C) […]