Tiêu đề K-2815 (Paper-II) (Life Science).pdf ✅

Total Number of Pages : 8 Paper II 2 K-2815 1. In the glycolytic pathway, 1,3 bis phospho glycerate is converted into 3 phospho glycerate and the phosphate group is transferred to ADP to produce ATP. This type of reaction is called (A) Futile cycle (B) Substrate level phosphorylation (C) Energy conservation reaction (D) Oxidative phosphorylation 2. A plasmid vector has two restriction sites for EcoRI and one restriction site for BamHI. A double digest of the plasmid with these two restriction enzymes will yield how many fragments ? (A) 1 (B) 2 (C) 3 (D) 4 3. Which of the following is not an intermediate in the citric acid cycle ? (A) Pyruvate (B) Oxaloacetate (C) Succinate (D) Malate LIFE SCIENCE Paper – II Note : This paper contains fifty (50) objective type questions. Each question carries two (2) marks. All questions are compulsory. 4. The sequence of a strand of DNA is 5’-CATTAG-3. What will be the sequence of the complimentary strand ? (A) 5’-GTAATC-3’ (B) 5’-CATTAG-3’ (C) 5’-CTAATG-3’ (D) 5’-GATTAC-3’ 5. Swi/Snf complex is involved in (A) Histone modification (B) Chromatin remodeling (C) Heterochromatinization (D) Nucleosome condensation 6. Toll-like receptors are involved in (A) Antigen processing by B cells (B) Maturation of B cells (C) Maturation of dendritic cells (D) Damage pattern recognition 7. A couple has four children each having a different blood group. Hence the blood group of the parents will be (A) IA I A and i i (B) IB IB and i i (C) IA IA and IB IB (D) IA i and IB i
Total Number of Pages : 8 K-2815 3 Paper II 8. The relationship between D-Glucose and d-Glucose is (A) Both are the same (B) D-refers to optical rotation and d-refers to configuration (C) D-refers to configuration and d-refers to optical activity (D) D configuration always gives rise to dextro rotation 9. A restriction endonuclease recognizes 6 bases in a DNA sequence and makes a cut. Assuming that the bases are randomly distributed in the DNA, what will be the size of the fragments generated by this endonuclease ? (A) 256 bp (B) 2096 bp (C) 4096 bp (D) 6096 bp 10. Membrane rafts are examples of (A) Membrane microdomains (B) Membrane vesicles (C) Polarized membrane (D) Clathrin coated vesicles 11. Which of the following statements regarding lac operon is FALSE ? (A) When both glucose and lactose are present, there is a large amount of transcription (B) When both glucose and lactose are absent, there is no transcription (C) When glucose is present and lactose is absent, there is no transcription (D) When glucose is absent and lactose is present, there is a large amount of transcription 12. The backbone atoms in a peptide linkage is as follows (A) C-N-C-C (B) C-C-N-C (C) C-O-N-C (D) C-C-O-N 13. In biological nomenclature, if a specific epithet exactly repeats generic name, then it is called (A) Synonym (B) Basionym (C) Tautonym (D) Homonym 14. In Stanley Miller’s experiment that provided a conclusive evidence for the chemical synthesis of biomolecules, the following gases were used (A) Methane, ammonia and hydrogen (B) Methane and hydrogen peroxide (C) Helium, oxygen and hydrogen peroxide (D) Hydrogen, carbon dioxide and helium 15. Baveria bassiana is commercially useful as a (A) Biofertiliser (B) Bioinsecticide (C) Pathogen (D) Fermenting agent