In an organism, if the percentage (%) of adenine is 23 then, the % of Guanine wi

Question

In an organism, if the percentage (%) of adenine is 23 then, the % of Guanine will be A) 25 B) 26 C) 27 D) 28 The following type of mutation in a proto-oncogene may cause cancer in human: A) Translocation of gene B) Gene amplification C) Point mutation within regulatory element. D) Point mutation within gene E) All of the above The following statement is true about a tumor suppressor gene mutation to induce cell division of a mammalian cell: A) Proto-oncogene product must have decreased activity. B) Tumor suppressor gene product must lose activity. C) Tumor suppressor gene product must have an increased activity. D) Proto-oncogene must lose ability to express mRNA. Incidence of cancer in human increases with age suggesting that: A) Cancer is an infectious disease. B) Multiple mutations are required to develop cancer. C) Cancer gene(s) cannot be acquired in lifetime D) None of the above are Which of the following is true concerning cancer cells? A) They do not exhibit density-dependent inhibition when growing in culture. B) When they stop dividing, they do so at random points in the cell cycle. C) They are not subject to cell cycle controls D) Band C only E) A, B, and C 5-Bromouracil could possible best pair with nucleotide(s): A) 3Aminopurine and Guanine B) Adenine and Cytosine C) Guanine D) Amino-4-Cytosine E) 4Aminopurine and guanine

Explanation / Answer

44. c. 27

Solution: Adenine:Thyamine and Guanine:Cytosine = 100%

Given A = 23% hence T = 23% A+T = 23 + 23 = 46

Guanine+Cytosine = 100 - 46 = 54

Guanine = 54/2 = 27 and Cytosine is 27

45. E. All of the above

46. B. Tumor suppressor gene product must lose its activity

47. B. Multiple mutations are required to develop cancer

48. E. A, B and C

49. c. Guanine

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