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GATE 2015 : Biotechnology

10 pages, 55 questions, 38 questions with responses, 55 total responses
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GATE 2015 BIOTECHNOLOGY BT Q. 1 Q. 25 carry one mark each. Q.1 Which one of the following complement proteins is the initiator of the membrane attack complex? (A) C3a Q.2 (B) C3b (C) C5a Levinthal s paradox is related to (A) protein secretion (C) protein folding Q.3 (B) protein degradation (D) protein trafficking Which one of the following is a second generation genetically engineered crop? (A) Bt brinjal (C) Golden rice Q.4 (B) Roundup soyabean (D) Bt rice Based on the heavy chain, which one of the following antibodies has multiple subtypes? (A) IgM Q.5 (B) IgD (C) IgE (C) proplastid (B) phragmoplast (B) allergy to environmental antigens (D) a state of no energy ABO blood group antigens in humans are differentiated from each other on the basis of (A) sialic acid Q.8 (D) chromoplastid Anergy refers to (A) mitochondrial dysfunction (C) unresponsiveness to antigens Q.7 (D) IgG The cytokinetic organelle in plant cells is (A) centriole Q.6 (D) C5b (B) lipids (C) spectrin (D) glycoproteins Which one of the following organisms is used for the determination of phenol coefficient of a disinfectant? (A) Salmonella typhi (C) Candida albicans (B) Escherichia coli (D) Bacillus psychrophilus Q.9 A single subunit enzyme converts 420 moles of substrate to product in one minute. The activity of the enzyme is 10 Katal. Q.10 Which one of the following amino acids has the highest probability to be found on the surface of a typical globular protein in aqueous environment? (A) Ala Q.11 Q.13 (C) NO2 (B) N2O 3 The determinant of the matrix 2 6 0 5 8 0 0 is 4 (D) NH4+ . Which one of the following features is NOT required in a prokaryotic expression vector? (A) oriC BT (D) Ile Which one of the following is NOT a product of denitrification in Pseudomonas? (A) N2 Q.12 (C) Arg (B) Val (B) Selection marker (C) CMV promoter (D) Ribosome binding site 1/10

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