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33. Which one of the following is NOT a second messenger in mammalian cells? (A) Cyclic AMP (B) Diacyl glycerol (C) Calcium ion (D) Potassium ion Second Messengers in Mammalian […]

32. The most abundant phospholipid in E. coli plasma membrane is (A) Phosphatidyl ethanolamine (B) Phosphatidyl choline (C) Phosphatidyl serine (D) Phosphatidyl inositol Most Abundant Phospholipid in E. coli Plasma […]

31. Drosophila melanogaster is a diploid organism having 8 chromosomes. The number of combinations of chromosomes which are possible in its gametes is Number of Chromosome Combinations in Drosophila Gametes […]

30. What is (are) the difference(s) between microtubules and microfilaments? (A) Microtubules are made up of tubulin and microfilaments are made up of intermediate filaments (B)Microtubules are important for compression […]

29. Choose the option that shows the correct pairing of the cellular components with their corresponding function. P. Dynein                        […]

28. Signaling pathways usually comprise of several intermediate steps that are arranged in the form of a cascade. What is the primary outcome of such an arrangement? (A) Specificity of […]

27. Apoptosis is a controlled process of cell death. The process involves (A) exposure of phosphatidyl serine on the outer surface of the cell membrane (B) decreased permeability of the […]

26. Two mammalian cell lines with doubling times of 12 h and 36 h were cultured with radioactive thymidine for 8 h. The cells were further cultured without the radioactive […]

25. During mitosis, disappearance of the nucleolus is a hallmark of (A) metaphase (B) prophase (C) anaphase (D) telophase Disappearance of the Nucleolus During Mitosis: Prophase Introduction Mitosis is a […]

24. During eukaryotic cell division, the amount of DNA doubles (A) between prophase and anaphase of mitosis (B) between prophase I and prophase II of meiosis (C) between the G […]