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Q.24 Reabsorption of water via the distal convoluted tubule is by which of the following? (1) Rennin and angiotensin (2) Aldosterone (3) Vasopressin (4) Glucocorticoid Water Reabsorption in DCT: Vasopressin […]

Q.23 In the stomach, hydrochloric acid (HCl) is secreted by (1) Chief cells (2) Parietal cells (3) Enterochromaffin cells (4) Mucous cells HCl Secreted by Parietal Cells Hydrochloric acid (HCl) […]

Q.22 Which one of the following is known as pacemaker of the heart? (1) Sino-Atrial Node (2) Atrio-Ventricular Node (3) Purkinje Fibres (4) Bundle of His Pacemaker of the Heart: […]

Q.21 Melatonin is derived from which of the following? (1) Epinephrine (2) Nor-epinephrine (3) Serotonin (4) Histamine Melatonin Derived from Serotonin Melatonin, the sleep-regulating hormone, is biosynthesized directly from serotonin […]

Q.20 In the formation of agarose gel, which one of the following bonds is involved? (1) Van der Waals interaction (2) Intra-chain hydrogen bonding (3) Inter and Intra-chain hydrogen bonding […]

Q.19 Which one of the following technique is used for the characterisation of RNA? (1) Western blotting (2) Southern blotting (3) Northern blotting (4) Eastern blotting Blotting Techniques: The Molecular […]

Q.18 Direct Greenhouse gases do not include (1) Methane (2) Carbon dioxide (3) Nitrous oxide (4) Sulphur dioxide Decoding Direct vs. Indirect Greenhouse Gases Greenhouse gases (GHGs) trap heat in […]

Q.17 Lysozyme cleaves peptidoglycan at (1) N-acetyl muramic acid and N-acetyl glucosamine (2) N-acetyl glucosamine and N-acetyl muramic acid (3) N-acetyl muramic acid and N-acetyl muramic acid (4) N-acetyl glucosamine […]

Q.16 The formation of hypoblast in birds is a result of (1) Epiboly (2) Delamination (3) Invagination (4) Involution Understanding Hypoblast Formation in Birds In avian embryology, the hypoblast plays […]

Q.15 Phospholipase C cleaves phosphatidyl-inositol 4, 5, bisphosphate into the following: (1) Phosphatidyl-choline and Phosphatidic acid (2) Phosphatidic acid and Choline (3) Inositol 1, 4, 5-triphosphate and diacylglycerol (4) Triacylglycerol […]