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52. Many biological processes are known to oscillate over time, which are represented by an increase in a molecular factor followed by a decrease, which continues over time. Which of […]

51. After fertilization, cells in vertebrate embryos divide at regular intervals giving rise to a mass of cells termed the blastula. As cells divide, they undergo cleavage, where the enormous […]

50. Species S1 and S2 use the same resource R, with S1 being more efficient in using the resource. A predator P consumes both prey species, but at different rates. […]

49. Carbon dioxide in the blood is mostly _____________. A. bound to albumin B. bound to hemoglobin C. in the form of carbonic acid D. bound to myoglobin Carbon dioxide […]

48. A woman is heterozygous for both phenylketonuria mutation and for X-linked hemophilia mutation. She has a child with a phenotypically normal man, who is also heterozygous for a phenylketonuria […]

47. A friend of yours measured the quantity of DNA in grasshopper cells growing in the cell culture. Cells examined during the G2 phase of the cell cycle contained 200 […]

46. The time required for replication of the E.coli chromosome is 40 minutes but the bacterium is capable of dividing every 20 minutes under the right nutritional conditions. This is […]

45. If the backbone -NH2 group in amino acids are modified to -NH(CH3) group, how will the allowed regions in Ramachandran map of the modified protein change? A. Allowed region […]

44. The keto (left) and enol (right) tautomerized structures of guanine is shown below. The keto and enol forms of cytosine and thymine are shown below. Which of the following […]

43. An enzyme has a Vmax of 50 mol product formed (minute X mg protein)-1 and a Km of 10 M for the substrate. When a reaction mixture contains the […]