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Q.11 Viral capsids are made up of morphological subunits called capsomeres. One of the common capsomeres is icosahedral. The icosahedron is a regular polyhedron with (A) 16 triangular facets and […]

Q.10 The reaction of 11-cis-retinal with the lysine residue of a specific protein forms the light-sensitive pigment in the cells of retina. The light-sensitive pigment is an (A) amide.    […]

Q.9 The logic operation (OR, AND, NOR or NAND) carried out by following circuit is (A) AND (B) NOR (C) OR (D) NAND Understanding the Given Logic Circuit The figure […]

Q.8 Three vectors are as follows: \(\vec{a} = 3\hat{i} – 10\hat{j} + 7\hat{k}\) \(\vec{b} = -9\hat{i} + 6\hat{j} – 47\hat{k}\) \(\vec{c} = 11\hat{i} – 17\hat{k}\) The value of \((\vec{a} + […]

Q.7 The value of \(\lim_{n\to\infty} \frac{3n^2 + 5n + 4}{4 + 2n^2}\) is (A) 0 (B) 0.75 (C) 1.5 (D) 3 Introduction Finding the limit of rational functions like (3n2+5n+4)/(4+2n2) […]

Q.6 What is the source of electrons in photosynthesis? (A) Carbohydrates (B) Water (C) CO2 (D) NADH Water serves as the source of electrons in the light-dependent reactions of photosynthesis, […]

Q.5 In the feedback regulation of an enzyme, the end product binds to the (A) active site of the enzyme. (B) allosteric site of the enzyme. (C) enzyme-substrate complex. (D) […]

Q.4 Pyramid of energy in a forest ecosystem is (A) always inverted. (B) dumb-bell shaped. (C) spindle shaped. (D) always upright. Pyramid of energy in a forest ecosystem is always […]

Q.3 Which one of the following organelles is enclosed by a single membrane? (A) Ribosome (B) Mitochondria (C) Endoplasmic reticulum (D) Centrosome Endoplasmic reticulum (C) is the organelle enclosed by […]

Q.2 Which one of the following statements is CORRECT for Mycoplasma? (A) Their cells are of definite shape. (B) They are resistant to lysis by osmotic shock. (C) Their growth […]