Biology MCQs

31. Which is a symptom of labyrinthitis?
[A] Pain in the ear
[B] Permanent deafness
[C] Chronic inflammation
[D] All of the above

Show Answer

32. Which of the following are the characteristics of cardiac muscle?
[A] involuntary
[B] intrinsically controlled
[C] single nucleated
[D] All of the above

Show Answer

33. Which of the following is a function of the heart?
[A] makes blood cells
[B] to pump blood throughout the body
[C] Both 1 and 2
[D] Neither 1 nor 2

Show Answer

34. Albumin is the most important protein in blood serum. It is produced by which of the following organs?
[A] Heart
[B] Lungs
[C] Liver
[D] Endocrine glands

Show Answer

35. Which is the Growth hormone inhibiting hormone?
[A] FSH
[B] TRH
[C] GHRH
[D] Somatostatin

Show Answer

36. Which of the following is the division of human eggs?
[A] Holoblastic and unequal
[B] Meroblastic
[C] Holoblastic and equal
[D] Isoblastic

Show Answer

37. What is the number of autosomes in a human primary sperm cell?
[A] 46
[B] 44
[C] 23
[D] 22

Show Answer

38. The point mutation results in a change in the codon, which then codes for another amino acid is called __
[A] Silent mutation
[B] Nonsense mutation
[C] Missense mutation
[D] None of these

Show Answer

39. Which enzyme in the human body helps break down carbohydrates?
[A] Lipase
[B] Amylase
[C] Peptidase
[D] Protease

Show Answer

40. Which of the following plant hormones are incorrectly paired?
[A] Cytokinins- senescence
[B] Abscisic acid- transpiration
[C] Auxins- apical dominance
[D] Gibberlins- bud and seed dormancy

Show Answer