Tag: GATE Life Science Previous Year Papers with Solutions

28. are questions with numerical answer. The predicted molar extinction coefficient at 280 nm for the peptide GEEFHISFLLIMFGAWSTHMYRTYWFIHEMISTRY is ____ M⁻¹cm⁻¹. [Molar extinction coefficients for phenylalanine, tryptophan and tyrosine at […]

27. The following table provides information about four proteins. Protein                                          […]

26. Match the entries in Column-1 with those in Column-2 Column-1                                     Column-2 P. […]

25. Which one of the following is NOT a receptor tyrosine kinase? (A) Platelet derived growth factor receptor (B) Insulin like growth factor -1 receptor (C) Macrophage colony stimulating factor […]

24. A closed circular B-DNA of 4000 base pairs is negatively supercoiled by introduction of 4 writhes. The super helical density of the resultant DNA molecule will be ____ Understanding […]

23. Which one of the following does NOT constitute the lipid moiety in lipid-linked membrane proteins? (A) Palmitic acid (B) Stearic acid (C) Farnesyl groups (D) Myristic acid Palmitic acid, […]

22. Which one of the following amino acid substitutions is likely to cause the largest change in protein conformation? (A) Phe → Ile (B) Ser → Thr (C) Gln → […]

21. The formation of a carbocation, also called an oxonium ion, occurs during the reaction catalyzed by (A) aldolase (B) lysozyme (C) ribonuclease A (D) ) carboxypeptidase The correct answer […]

20. Proteolytic enzymes are usually biosynthesized as large, inactive precursors known as (A) holoenzymes (B) ribozyme (C) zymogens (D) apoenzymes Proteolytic enzymes are biosynthesized as large, inactive precursors called zymogens […]

19. Ribulose-5-phosphate epimerase is involved in which one of the following processes? (A) Glycolysis (B) TCA cycle (C) Glycosylation (D) Pentose phosphate pathway Ribulose-5-phosphate epimerase, also known as ribulose-phosphate 3-epimerase […]