TOP 50+ Interesting Biology Questions and Answers: You Must Know!!

TOP 50+ Interesting Biology Questions and Answers

General Science is extremely important for all the competition exams & questions based on General Science or General Awareness are frequently asked in various exams like Railway NTPC, UPSC IAS (Civil Service Exam), SSC, Railway Group D, etc. Here we are going to share some of The Most Interesting Biology Questions and Answers that can help you to improve your science gk knowledge.

Biology Questions and Answers in English

Q1. The function of ribosomes is

(a) Secretion (b) Excretion (c) Powerhouse of the cell (d) Protein synthesis

Ans: (d)

Q2. Waldeyer gave the name

(a) microsome (b) chromosome (c) ribosome (d) lysosome

Ans: (b)

Q3. The ultimate substances to which the carbohydrates are degraded are

(a) amino acid (b) glycerol (c) glucose (d) maltose

Ans: (c)
Q4. Food substances are substances by

(a) hormones (b) enzymes (c) vitamins (d) zymogens

Ans: (b)

Q5. Most of the enzymes are

(a) proteins (b) lipids (c) acids (d) alkalis

Ans: (a)

Q6. Enzymes are produced by (a) endocrine glands (b) exocrine glands (c) liver (d) spleen

Ans: (b)

Q7. Biocatalysts are (a) hormones (b) vitamins (c) enzymes (d) pheromones

Ans: (c)

Q8. At the end of a reaction enzymes are (a) left as they are (b) reduced (c) increased (d) neutralised

Ans: (a)

Q9. Digestion of proteins starts in the (a) mouth (b) stomach (c) duodenum (d) intestine

Ans: (b)

Q10. The ‘mad-cow disease’ (Jakob-Creutzfeldt disease) is produced by certain

(a) bacterium (b) virus (c) viroid (d) prion

Ans: (d)

Q11. Prions are composed largely of

(a) DNA (b) proteins (c) RNA (d) None of these

Ans: (b)

Q12. The following disease is prevented by triple-antigen immunization

(a) Diphtheria (b) Tuberculosis (c) Smallpox (d) Mumps

Ans: (a)

Q13. One of the following disease cannot be prevented by the DPT (triple-antigen) immunization of children.

(a) Tetanus (b) Tuberculosis (c) Whooping cough (d) Diphtheria

Ans: (b)

Q14. Bordetella pertussis causes

(a) tetanus (b) diphtheria (c) whooping cough (d) rabies

Ans: (c)

Q15. The dreaded virus which, on reaching the central nervous system, produces spasms of the muscles of the throat and the cheat while swallowing, and is sure to kill the patient is

(a) Poliomyelitis virus (b) AIDS virus (c) Smallpox virus (d) Rabies virus

Ans: (d)

Q16. HIV causes (a) cancer (b) hepatitis (c) AIDS (d) Herpes

Ans: (c)

Q17. Cancer is induced by certain viruses called

(a) poxviruses (b) adenoviruses (c) oncogenic viruses (d) herpesviruses

Ans: (c)

Q18. The pathogenic organisms of an infected person are destroyed by the action of

(a) erythrocytes (b) leucocytes (c) blood platelets (d) all of these

Ans: (b)

Q19. Tse-Tse fly is the vector for

(a) malarial parasite (b) try peorosoma (c) piroplasm (d) microfilaria

Ans: (b)

Q20. Athlete’s Coot is the common name for the fungal disease

(a) Tinea pedis (b) Tinea cruris (c) Tinea corporis (d) Tinea capitis

Ans: (a)

Q21. Tetrodotoxin is a potent poison that

(a) erodes blood vessels (b) blocks conduction of nerve impulses causing respiratory paralysis (c) produces damage to the kidneys (d) produces intestinal bleeding

Ans: (b)

Q22. Xerophthalmia is a deficiency disease. Deficiency of _________ causes it.

(a) vitamin A (b) vitamin B (c) vitamin C (d) vitamin E

Ans: (a)

Q23. The mode of nutrition in which particulate food is devoured is

(a) holozoic (b) holophytic (c) saprophytic (d) parasitic

Ans: (a)

Q24. Green plants synthesise carbohydrates by the

(a) holozoic method (b) holophytic method (c) saprophytic method (d) parasitic method

Ans: (b)

Q25. Organisms that feed on the excreta of other organisms are called

(a) autotrophs (b) heterotrophs (c) coprophagous (d) saprotrophs

Ans: (c)

Q26. The ‘germ theory of disease’ was propounded by

(a) Joseph Lister (b) Robert Koch (c) Louis Pasteur (d) Jacob Heule

Ans: (c)

Q27. The ‘graveyard of the RBC’ refers to

(a) spleen (b) liver (c) bone marrow (d) thymus

Ans: (a)

Q28. Who was the first scientist/doctor who attempted vaccination?

(a) Joseph Lister (b) Robert Koch (c) Elie Metchnikoff (d) Edward Jenner

Ans: (d)

Q29. Sterilization, as the means for the prevention of sepsis in surgery, was practised and advocated by

(a) Louis Pasteur (b) Edward .Jenner (c) Joseph Lister (d) Martinus Willem Beijerinck

Ans: (c)

Q30. Louis Pasteur developed the vaccine for ______ for the first time.

(a) smallpox (b) cowpox (c) tetanus (d) chicken cholera

Ans: (d)

Q31.Viruses have (a) DNA only (b) RNA only (c) Either DNA or RNA (d) Both DNA and RNA

Ans: (c)

Q32. Animals that feed only on dead flesh are

(a) herbivorous (b) carnivorous (c) omnivorous (d) carrion-eaters

Ans: (d)

Q33. Organisms that depend only on raw plant products are said to be

(a) herbivorous (b) vegetarian (c) carnivorous (d) omnivorous

Ans: (a)

Q34. Herbivores are (a) primary consumers (b) secondary consumers (c) tertiary consumers (d) decomposers

Ans: (a)

Q35. Organisms which synthesise their own food are called

(a) autotrophs (b) heterotrophs (c) saprotrophs (d) auxotrophs

Ans: (a)

Q36. 1 gm of carbohydrate gives energy which is about

(a) 3 k cal (b) 2 k cal (c) 4.2 k cal (d) 8.1 k cal

Ans: (c)

Q37. Carbohydrates are mainly needed for

(a) growth (b) immunity (c) repair (d) energy

Ans: (d)

Q38. Man has ____ pairs of salivary glands. (a) 3 (b) 4 (c) 6 (d) 8

Ans: (a)

Q39. The saliva contains an enzyme called (a) ptyalin (b) pepsin (c) trypsin (d) erepsin

Ans: (a)

Q40. Infection of salivary glands by a virus leads to (a) tetanus (b) mumps (c) pyorrhoea (d) ulcers

Ans: (b)

Q41. The hormone that is responsible for secondary sexual character in the male is

(a) oestrogen (b) progesterone (c) testosterone (d) prolactin

Ans: (c)

Q42. Saliva flows at the sight of food. This action is (a) involuntary (b) voluntary (c) a reflex (d) causative

Ans: (c)

Q43. The acid that is secreted in the stomach is (a) HCI (b) H2SO4 (c) H2CO3 (d) HNO3

Ans: (a)
Q44. The bile contains the pigments

(a) haemoglobin and haemoerythrin (b) biliviridin and bilirubin (c) bilirubin and haemocyanin (d) haemoglobin and biliviridin

Ans: (b)

Q45. The liver destroys old (a) leucocytes (b) thrombocytes (c) erythrocytes (d) lymphocytes

Ans: (c)

Q46. Insulin is concerned with the metabolism of (a) sugar (b) fats (c) proteins (d) vitamins

Ans: (a)

Q47. Scurvy is prevented by vitamin (a) A (b) B (c) C (d) D Ans: (c) Which one is a water-soluble vitamin? (a) A (b) C (c) D (d) E

Ans: (b)

Q48. The diseases that are caused by lack of vitamins are called

(a) deficiency diseases (b) communicable diseases (c) epidemics (d) tropical diseases

Ans: (a)

Q49. ‘Kwashiorkor’ is caused by deficiency of (a) carbohydrates (b) proteins (c) fats (d) vitamins

Ans: (b)

Q50. Synthesis of nutrients by green plants is called (a) photo-oxidation (b) photo-respiration (c) photo-synthesis (d) photo-periodism Ans: (c)

Q51. The insects do not have blood pigments because

(a) there is no blood (b) blood does not have a respiratory function (c) tissues have pigments (d) pigments are elsewhere

Ans: (b)

Q52. The metallic part of haemoglobin is

(a) copper (b) molybdenum (c) nickel (d) iron

Ans: (d)

Q53. The specific gravity of blood is

(a) lower than water (b) higher than water (c) same as water (d) many times that of water

Ans: (b)

Q54. Blood is (a) acidic (b) alkaline (c) neutral (d) like a buffer

Ans: (b)

Q55. The white blood corpuscles the body” because they are popularly called “soldiers of

(a) march at a regular pace (b) appear uniform (c) defend the body (d) are disciplined

Ans: (c)

Q56. Loss of blood is minimized due to blood

(a) clotting (b) receding (c) healing (d) drying up

Ans: (a)

Q57. The disease in which blood clotting does not take place is known as

(a) xerophthalmia (b) haemopoiesis (c) haemophilia (d) haemoerythrin

Ans: (c)

Q58. The enzyme that is necessary to bring about clotting of blood is

(a) peptidase (b) amylase (c) lipase (d) thrombokinase

Ans: (d)

Q59. Blood clotting requires vitamin (a) A (b) B (c) C (d) K

Ans: (d)

Q60. Riboflavin is otherwise known as

(a) vitamin B-complex (b) vitamin B2 (c) vitamin A (d) vitamin E

Ans: (b)

Q61. What are the symptoms of ‘Pellagra’?

(a) Colour blindness (b) Rickets (c) Patches of skin (d) Soft bones

Ans: (c)

Q62. What are the symptoms of retinal deficiency?

(a) Dry skin (b) Rough skin (c) Night blindness (d) Sensitiveness to light and ulcers

Ans: (c)

Q63. Malnutrition is due to (a) undernourishment (b) want of balanced diet (c) overfeeding (d) All the above

Ans: (a)

Q64. The hormone secreted when one is frightened or excited

(a) pituitrin (b) thyroxine (c) adrenaline (d) parathormone

Ans: (c)

Q65. Which hormone is secreted when there is a rise in the blood glucose level?

(a) Glucagon (b) Insulin (c) Nor-adrenaline (d) Thyroxine

Ans: (b)
Q66. The amount of blood in a normal man is about

(a) 5.0 litres (b) 2.5 litres (c) 3.8 litres (d) 4.7 litres

Ans: (a)

Q67. The universal donor belongs to blood group

(a) A (b) B (c) AB (d) O

Ans: (d)

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