Tag: GATE Life Science Previous Year Papers with Solutions

Q.92 The blind spot in the retina is blind because of which of the following reasons?(A) It is the region where the optical nerve leaves the retina.(B) The opsin is not […]

Q.91 The relationship between genes and enzymes was first suggested by the discovery of(A) in-born errors of metabolism in human(B) sexual phenotype in insects(C) metabolic pathways in fungi(D) gene regulation in […]

Q.90 A typical receptor senses extracellular stimuli by virtue of its localization on plasma membrane.The receptor to which of the following ligands is an exception to this rule?(A)  γ-amino butyric acid […]

Q.89 Zygotic genes required for the formation of a group of adjacent segment in the developingDrosophila embryo is called(A) Maternal gene (B) Pair rule gene (C) Homeotic gene (D) Gap gene […]

Q.88 Some species of beetles and fishes can survive at sub freezing temperature. They accomplish thisby maintaining cellular integrity using one of the following mechanisms.(A) Expressing anti-freeze proteins(B) Accumulating fats(C) Increasing […]

Q.87 A swimmer is preparing to swim ‘non-stop’ across the English channel (a distance of 34 kilometers).Consumption of which of the following category of food/s should the swimmer increase toaccomplish this […]

Q.86 Trees in the equatorial region of earth supply oxygen into the atmosphere that sustains speciesliving in distant polar regions. This relationship is called as(A) mutualism (B) symbiosis(C) commensalism (D) parasitism […]

Q.85 Methane belched (eructation) out by cattle arises from the carbon dioxide produced(A) during normal respiration(B) oxidation of food stuff occurring in mitochondria(C) lactic acid fermentation occurring in muscles(D) bacterial fermentation […]

Q.84 Transformation of normal cyanobacterial cells into heterocysts involves(A) synthesis of nitrogenase and retention of photosystem I(B) synthesis of nitrogenase and loss of photosystem I(C) loss of nitrogenase but retention of […]

Q.83 Nalidixic acid inhibits gyrase activity. Resistance to this antibiotic arises mainly due to(A) nonsense mutation in the gyrase gene (B) deletion mutation in the gyrase gene(C) missense mutation in […]