Biology Human Body Practice Questions 50

Biology human body practice questions are important for UPSC, APPSC, TGPSC and other competitive exams. These questions cover the digestive system, respiratory system, nervous system, circulatory system and human organs for quick revision.

1. How many bones are in the adult human body?

206

200

210

300

2. Which blood group is known as universal donor?

O negative

AB positive

O positive

A negative

3. What is the normal human body temperature?

37°C

35°C

39°C

40°C

4. Which organ is known as the powerhouse of the cell?

Mitochondria

Nucleus

Ribosome

Golgi apparatus

5. How many chambers does the human heart have?

6. Which blood group is known as universal recipient?

AB positive

O negative

AB negative

O positive

7. What is the largest gland in the human body?

Liver

Pancreas

Thyroid

Pituitary

8. How many pairs of chromosomes do humans have?

9. Which vitamin is produced by sunlight on skin?

Vitamin D

Vitamin A

Vitamin C

Vitamin B12

10. What is the functional unit of kidney?

Nephron

Neuron

Alveoli

Glomerulus

11. Which part of brain controls balance?

Cerebellum

Cerebrum

Medulla

Hypothalamus

12. What is the normal blood pressure?

120/80 mmHg

140/90 mmHg

100/70 mmHg

130/85 mmHg

13. Which cells fight infection in the body?

White blood cells

Red blood cells

Platelets

Plasma

14. What is the largest artery in the body?

Aorta

Pulmonary artery

Carotid artery

Femoral artery

15. Which organ produces insulin?

Pancreas

Liver

Kidney

Adrenal gland

16. How many lobes are in the right lung?

17. What is the pH of human blood?

7.4

7.0

6.8

8.0

18. Which vitamin is essential for blood clotting?

Vitamin K

Vitamin C

Vitamin D

Vitamin E

19. What is the smallest bone in human body?

Stapes

Malleus

Incus

Phalanges

20. Which organ filters blood?

Kidney

Liver

Heart

Lungs

21. How much blood is in average adult human?

5-6 liters

3-4 liters

7-8 liters

2-3 liters

22. Which part of eye controls amount of light entering?

Iris

Cornea

Retina

Lens

23. What is the master gland of the body?

Pituitary gland

Thyroid gland

Adrenal gland

Pineal gland

24. Which muscle is the strongest in human body?

Masseter

Heart

Gluteus maximus

Tongue

25. What is the normal heart rate for adults?

60-100 bpm

40-60 bpm

100-120 bpm

120-140 bpm

26. Which vitamin deficiency causes scurvy?

Vitamin C

Vitamin D

Vitamin A

Vitamin B12

27. What is the largest part of the brain?

Cerebrum

Cerebellum

Brainstem

Medulla

28. Which cells carry oxygen in blood?

Red blood cells

White blood cells

Platelets

Plasma cells

29. What is the function of hemoglobin?

Transport oxygen

Fight infection

Clot blood

Digest food

30. Which organ produces bile?

Liver

Pancreas

Gallbladder

Stomach

31. How many teeth does an adult human have?

32. Which hormone regulates blood sugar?

Insulin

Adrenaline

Thyroxine

Cortisol

33. What is the covering of lungs called?

Pleura

Pericardium

Peritoneum

Meninges

34. Which vitamin deficiency causes night blindness?

Vitamin A

Vitamin D

Vitamin C

Vitamin E

35. What is the longest bone in human body?

Femur

Tibia

Humerus

Fibula

36. Which part of digestive system absorbs most nutrients?

Small intestine

Stomach

Large intestine

Esophagus

37. What is the normal respiratory rate for adults?

12-20 per minute

8-12 per minute

20-30 per minute

30-40 per minute

38. Which gland is affected in diabetes?

Pancreas

Thyroid

Adrenal

Pituitary

39. What is the function of platelets?

Blood clotting

Carry oxygen

Fight infection

Produce antibodies

40. Which organ detoxifies blood?

Liver

Kidney

Spleen

Pancreas

41. What is the covering of heart called?

Pericardium

Pleura

Peritoneum

Myocardium

42. Which vitamin is essential for calcium absorption?

Vitamin D

Vitamin C

Vitamin A

Vitamin K

43. What is the functional unit of lungs?

Alveoli

Bronchi

Bronchioles

Trachea

44. Which part of brain controls breathing?

Medulla oblongata

Cerebrum

Cerebellum

Hypothalamus

45. What is the largest vein in the body?

Inferior vena cava

Superior vena cava

Aorta

Pulmonary vein

46. Which hormone is called fight or flight hormone?

Adrenaline

Insulin

Thyroxine

Cortisol

47. What is the normal lifespan of RBC?

120 days

60 days

90 days

180 days

48. Which organ stores bile?

Gallbladder

Liver

Pancreas

Spleen

49. What is the chemical name for vitamin C?

Ascorbic acid

Citric acid

Folic acid

Nicotinic acid

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Practice Questions on Biology Human Body

Biology human body practice questions are important for UPSC, APPSC, TGPSC and other competitive exams. These questions cover the digestive system, respiratory system, nervous system, circulatory system and human organs for quick revision.

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Biology human body practice questions are important for UPSC, APPSC, TGPSC and other competitive exams. These questions cover the digestive system, respiratory system, nervous system, circulatory system and human organs for quick revision.

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