Previous Year. Examination. (Original Question Paper with Answer Key) JOINT ADMISSION TEST FOR M.Sc IN IITs AND IISc

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1 Prevus Year of Examinatn (Origina Questn Paper ith Anser Key) JOINT ADMISSION TEST FOR M.Sc IN IITs AND IISc For more questn papers, pee visit: a

2 a INDIAN INSTITUTE OF SCIENCE BANGALORE Prram Entrance Paper Research : Bica Sciences : BC Paper Code Print e... Save paper... Save trees Day & Date SUNDAY, 26THAPRIL 2009 Time 9.00 A.M. TO 12.'00 NOON- Donoaded fr... a 9

3 Print e... Save paper... Save trees GENEFWL INSTRUCTIONS 1. This questn paper consists of 100 mutipe choice questns and carries a tota of 100 marks, one mark for each questn. 2. Ansers to a questns shoud be marked in the OMR sheet provided. 3. For each questn darken (fi) thc appropriate bubbe on the OMR sheet ta indicate a 4. your anser. Use ony H 3 pencis to darken the bubbesansers Darken ony one bubbe per questn. If you mark more than one bubbe to anser a questn, it i be evauated incorrect If you ish to change your anser, pee ere the existing mark cpetey before fiing in the other bubbe There is no negative marking for rong ansers. Candidates are required to fi in the required Fieds on the anser sheet attached. Donoaded fr... a

4 Print e... Save paper... Save trees BIOLOGICAL SCIENCES (D) Emusn tcst (A) fatty acid bsynthesis (B) protein synthesis (C) P-oxidatn (D) DNA synthesis a 2. Which proce does NOT occur in mitochondria? (A) Iodine test (B) Benedict's tes! (C)- B'iurct test 1. Which test is cmony uscd to identify a rcducing sugar? 3. Using site-directed mutagcnesis, four mutants ere generated. Which mutant h the argest difference in the number ofats cpared to the id type? Ser-Cys (B) Tyr + Phe (C) Lys 4 Aa (D) Arg+ Lys (A) 4. The major storage poysaccharide of mamm is found in highesi amounts in hich organ? Kidney (A) (B) Liver (C) Speen (D) Pancre 5. Fr the fooing sets, pick h e one that contains excusivey hydrophobic amino acids (A) Asp, Gu, Lys, Arg, Ser (B) Arg, Phe, Tyr, Trp, Asn (C) Aa, IIe, Leu, Phe, Va (D) Aa, k g, Phe, Leu, Tyr Donoaded fr... a

5 Print e... Save paper... Save trees 6. An enzyrne (Moecuar eight = 5,500 Da) h a concentratn of 93.5 fiter and maximum veocity of M-'~ e c - ' What. is the specificity constant for the enzyme and substrate if KM is M? (A) M-' ~ e c - ' M-' ~ec-' (C) M-' ~ e c * ' (B) se=-' a (A) It h 10.5%guanosine (B) It h 29% guanosine (C) It h 2 1% guanosine (D) It h 58% guanosine 7. Which one of the fooing statements about a circuar doube stranded DNA gene having 2 1% adenosine is TRUE? 8. The pepide, Aa-Arg-Gn-Met-Thr-Trp-Lys-Va, digested ith cyanen bride to produce + Thr-Trp-Lys-VaI (A) Aa-Arg-Gn-Met (B) Aa-Arg-Gn-Met-Thr-Trp + Lys-Va (C) Aa-Arg + Gn-Met-Thr-Trp-Lys-Va (D) Aa-Arg-Gn + Met-Thr-Trp-Lys-Va 9. Deficiency of hich vitamin causes inefiicient coagen hydroxyatn? (A) Vitamin C (B) Vitamin A (C) VitaminB9 (D) Vitarnin B 10. Statins reduce choestero eves by inhibiting hich enzyme? (A) NADPH oxide (B) HMG-CoA reducte (C) HMG-CoA synthetc (D) Mevaonate kine (A) DNA poyrnere 3 (B) DNA poymere 1 (C) RNA poymere (D poy (A) poymere 11. Which enzyrne is invoved in non-tempate dependent nuceic acid synthesis? Donoaded fr... a

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