In this article, we are going to give you the Biology Questions, These are the Biology Mcqs that are collected from various sources such as NTS Past papers, FPSC past papers, and entrance test of medical universities. These Biology Questions will help the students to get higher marks in biology the subject.

Biology MCQs

Biology Questions

1. Which of the following cytoskeletal fiber contain tubulin protein?

A. One which help in assembly of spindles during mitosis.
B. One involved in internal cell motion.
C. One involved in maintenance of cell shape.
D. Both b and c

2. Only myosine is present in_____________?

A. A band
B. 1 band
C. H zone
D. Sarcomere

3. Joints present in skull are example of_______________?

A. Fibrous joints
B. Cartilaginous joints
C. Synovial Joints
D. Slightly moveable joints

4. The human naked eye can differentiate between two points which are __________ apart?

A. 1.0 mm
B. 0.1 mm
C. 1.0 cm
D. 1.0 dm

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5. _____________ is a nervous disorder characterized by involuntary tremors, diminished motor power and rigidity?

A. Epilepsy
B. Meningitis
C. Alzheimer’s disease
D. Parkinson’s disease

6. Of the following which one is not the characteristic of mitochondria?

A. It contains F1 particles
B. It is involved in the synthesis of protein
C. It is a self-replicating organelle
D. Number of mitochondria is constant

7. In human female, fertilization commonly occurs at______________?

A. Proximal part of oviduct
B. Distal part of oviduct
C. Uterus
D. Cervix

8. The part of chloroplast where CO2 is fixed to manufacture sugar is__________?

A. Stroma
B. Grana
C. Thylakoid
D. Outer membrane

9. Highest form of learning is__________________?

A. Latent learning
B. Insight learning
C. Operant conditioning
D. Instinct

10. Which of the following hormone is polypeptide in nature____________?

A. Insulin
B. Thyroxine
D. Cortisone


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11. Reactions in which simple substances are combined to form complex substances are called_____________?

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A. Metabolic reactions
B. Catabolic reactions
C. Anabolic reactions
D. None of these

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12. Which chemical component has the same % in bacterial as well as the mammalian cell_____________?

A. Water
B. Carbohydrate
C. Proteins
D. Lipids

13. The branch of biology which deals with the study of chemical compounds and the chemical processes in the fliving organisms is called_________________?

A. Chemistry
B. Biochemistry
C. Molecular biology
D. Both a and b

14. Which chemical component has the greatest contribution in the total mammalian cell weight__________?

A. Proteins
B. Carbohydrate
C. Lipids
D. Water

15. Which one is an organic compound_____________?

A. CO2
B. Water
C. Lipids

16. Carbon atom is_____________?

A. Monovalent
B. Divalent
C. Trivalent
D. Tetravalent

17. The property of water due to which it works as a temperature stabilizer and hence protect living organisms from sudden thermal changes is_______________?

A. High specific heat of vaporization
B. High specific heat capacity
C. Its Dipole nature
D. Its liquid state

18. The number of calories required to raise the temperature of 1g of water from 15 to 16?C is called___________?

A. Specific Heat of Vaporization
B. Specific Heat capacity
C. Caloric Heat
D. Both A and C

19. The one which is present in all living things is ___________?

A. Cell nucleus
C. Cell membrane
D. Vacuole

20. The mechanism of stomatal movement is related to the branch of Biology called__________?

A. Taxonomy
B. Physiology
C. Morphology
D. Anatomy

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21. Which of the following substance is most favorable to form structural component of biological membranes___________?

A. Hydrophilic Carbohydrates
B. Hydrophobic fats.
C. Both a and b
D. None of these

22. Maximum number of species of living things on earth are___________?

A. Algae
B. Fungi
C. Insects
D. Protozoa

23. Which statement is true about an aqueous medium________________?

A. Ionic as well as non-ionic substance in aqueous media retains their identity
B. Enzymes cannot perform catalysis reaction in this medium
C. Ions and molecules move randomly thus are in more favorable state to react with other molecules and ions
D. It is less favorable media for chemical reactions

24. Which of the following carbohydrate is tasteless___________?

A. Monosaccharide
B. Oligosaccharide
C. Polysaccharide
D. None of these

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25. Which of the statement is not true for compounds like glycoprotein and glycolipids____________?

A. They are conjugated molecules of carbohydrates
B. Both have role in the extra cellular matrix of animals and bacterial cell wall
C. They are components of biological membranes.
D. Both are produced and secreted by endoplasmic reticulum

26. A complex substance which on hydrolysis yields polyhydroxy aldehyde or ketone subunits is called__________?

A. Lipid
B. Carbohydrate
C. Protein
D. Carotein

27. Specific heat of vaporization of water is_______________?

A. 574 Kcal/kg
B. 674 Kcal/kg
C. 774 Kcal/kg
D. 874 Kcal/kg

28. Cn(H2O)n. is a general formula of_____________?

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A. Monosaccharides
B. Oligosaccharides
C. Polysaccharides
D. Carbohydrates

29. Which one are most complex sugar_____________?

A. Monosaccharides
B. Oligosaccharides
C. Polysaccharides
D. None of these

30. Variety among amino acids is produced due to_____________?

A. NH2 group
B. COOH group
C. R group
D. All of these

31. Number of nuclear pores/nucleus in an RBC are_________?

A. 1?3
B. 3?4
C. 10000
D. 30000

32. Yellow cytoplasm in ascidian gives rise to______________?

A. Epidermis
B. Muscle cells
C. Gut
D. Notochord

33. Chlorophyll molecule contains __________ as central metal ion.

A. Fe2+
B. Mg2+
C. Zn2+
D. Cu2+

34. Okazaki fragments are connected together through action of_________________?

A. Primase
B. Polymerase
C. Helicase
D. Ligase

35. Which of the following combination is an example of self-replicating organelles?

A. Mitochondria Ribosomes
B. Mitochondria Nucleus
C. Mitochondria Chloroplast
D. Mitochondria Vacuole

36. Which of the following is an autosomal disorder______________?

A. Down’s syndrome
B. Klinifelter’s syndrome
C. Turner’s syndrome
D. Jacob’s syndrome

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37. The place of centromere where spindle fiber get attached is_________?

A. Kinetochore
B. Kinochore
C. Centromere region
D. all of these

38. Embryonic induction is caused by part developing from_____________?

A. Endoderm
B. Ectoderm
C. Mesoderm
D. Extraembryonic layers

39. Sickle cell anemia is an example of_________________?

A. Chromosomal aberration
B. Insertion of gene
C. Deletion of gene
D. Point mutation

40. The type of plastids which help in pollination is_________?

A. Chromoplasts
B. Leucoplasts
C. Chloroplasts
D. All of these

41. Ribosomes were discovered by_______?

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A. Golgi
B. De Duve
C. Palade
D. R.Brown

42. Which character differentiates living things from non-living organisms___________?

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

43. The study of fossils is called__________?

A. Environmental Biology
B. Historical biology
C. Palaentology
D. Social biology

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44. A chemical substance that reacts with enzyme but is not transformed into product and thus blocking active site is called__________?

A. Substrate
B. Co-factor
C. Inhibitor
D. Promotor

45. The experiments on DNA molecules in chromosomes for knowing the basis of inherited diseases are conducted by________?

A. Molecular biologists
B. Microbiologists
C. Freshwater biologists
D. Social biologist

46. Percentage of water in brain cells is_______?

A. 20%
B. 65%
C. 85%
D. 89%

47. The atoms of different elements combine with each other through ionic or covalent bonding to produce compounds this stable form is called__________?

A. An organ
B. A molecule
C. Tissue
D. Both a and c

48. Different species of plants and animals living in the same habitat is called ___________?

A. Population
B. Community
C. Biome
D. Habitat

49. In animal coordination is achieved by means of_________?

A. Respiratory system
B. Nervous system
C. Endocrine system
D. Both b and c

50. ___________ is the potential source of chemical energy for cellular activities?

A. C-H bond
B. C-O bond
C. C-N bond
D. P-O-C bond

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