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Zoology Mcq Questions and Answers

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29. The mirror used by a dentist to examine the teeth of patients is
 
  • A. Plane
  • B. Concave
  • C. Convex
  • D. Cylindrical
Answer: C.
Convex
 
30. Which one of the following genetic diseases is sex linked?
 
  • A. Hypertension
  • B. Cystic fibrosis
  • C. Tay sachs disease
  • D. Haemophilia
Answer: D.
Haemophilia
 
 
31. Accumulation of which one of the following in the muscles leads to fatigue?
 
  • A. Uric acid
  • B. Benzoic acid
  • C. Lactic acid
  • D. Pyruvic acid
Answer: C.
Lactic acid
 
32. The structure of double helix of DNA was described by
 
  • A. Watson and Crick
  • B. Dr. A. Fleming
  • C. Dr. S. Hawking
  • D. Dr. M. Soha
Answer: A.
Watson and Crick