biology MCQs – Page 3

Practise multiple-choice questions from biology for competitive examinations and subject revision. Review each marked answer and report any item that may be outdated or unclear.

biology Mcqs
41. Which treatment is instituted in a cancerous patient?
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A. Antibiotic therapy

B. None of these

C. Gene therapy

D. Radiotherapy
42. The innate tendency of offspring to resemble their parents is called________?
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A. heridisk

B. none

C. varaition

D. heridity
43. Out of total organisms on earth, _____________are vascular plants?
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A. 9.40%

B. 19.90%

C. 53.10%

D. 17.60%
44. Starch is converted into maltose by?
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A. amylase

B. invertase

C. diastase

D. maltase

45. Removal or degradation of environmental pollutants or toxic materials by living organisms is called__________?
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A. Pasteurization

B. Integrated disease management

C. Bioremediation

D. Hydroponic culture technique

46. Under a compound microscope chromosome is made of arms and___________?
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A. Centrosome

B. Centromere

C. Centromere

D. Chromatid

47. Enzyme present in the saliva is_____________?
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A. invertase

B. ptyalin

C. trypsin

D. lipase

48. On the basis of collected facts and ?gures, a scientist formulates a factitive statement called:
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A. Inductive Reasoning

B. Hypothesis

C. Research work

D. Observation

49. Which one is a micromolecule__________?
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A. Protein

B. Polysaccharide

C. Hemoglobin

D. ATP
50. Fibers of the extracellular matrix is the characteristics of_______________?
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A. Bacterial cell wall

B. Fluid mosaic model of cell membrane

C. Plant cell wall

D. Cell membrane of bacteria

51. Un-separated replica of chromosome is called___________?
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A. Kinetochore

B. Chromatid

C. Chromatin

D. Centromere

52. Functional unit of DNA Is____________?
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A. Nucleus

B. Nucleolus

C. Chromosomes

D. Genes
53. An antibody is made of _________ polypeptide chains?
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A. 2

B. 4

C. 1

D. 3

54. The term biology was introduced in__________ in 1800?
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A. Italy

B. Germany

C. Turkey

D. Japan

55. In animals coordination is achieved by means of_________?
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A. Respiratory system

B. Nervous system

C. Endocrine system

D. Both b and c
56. Which character differentiates living things from non-living organisms?
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A. They live in the same ecosystem.

B. They are highly organized and complex made of one or more cells and contain genetic material

C. They are acted upon by the same environment

D. Both a and b

57. Which one is not correct for a productive theory?
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A. It discourages suggestion of different hypotheses

B. It has explanatory power

C. None of these

D. It is predictive

58. Proteins are made from amino acids by the process of ______________?
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A. Hydrolysis

B. Pinocytosis

C. Active transport

D. Dehydration synthesis
59. Which character differentiates living things from non-living organisms___________?
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A. They live in the same ecosystem.

B. They are acted upon by the same environment

C. They are highly organized and complex made of one or more cells and contain genetic material

D. Both a and b

60. Most cell membranes are composed principally of ?
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A. Protein and Lipids

B. Protein and RNA

C. DNA ad protein

D. Protein and Chitin