Biology mcqs for MCAT test preparation 2020

Entry test mcqs for medical

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Biology mcqs for MCAT test preparation 2020

1. Severe deficiency of Vitamin-D results in
(A) scurvy
(B) rickets
(C) night blindness
(D) osteomalacia

2. People living in high altitudes (like mountains) usually have a
(A) smaller number of Red Blood Cells
(B) larger number of Red Blood Cells
(C) smaller number of White Blood Cells
(D) larger number of White Blood Cells

3.The average adult’s blood volume is about ________ liters.
(A) 5
(B) 5.5
(C) 6
(D) 6.5

4.The average internal temperature of the human body
(A) 35 °C
(B) 36 °C
(C) 37 °C
(D) 38 °C

5. Vitamin ________ is needed to form light sensitive pigments in the retina.
(A) A
(B) C
(C) D
(D) B complex

6. The body weight of a mammal is approximately __________ of water.
(A) 60%
(B) 65%
(C) 70%
(D) 75%

7. Fight __________ foreign particles on the wound, such as bacteria.
(A) White Blood cells
(B) Red Blood Cells
(C) Platelets
(D) Plasma

8. Blood is carried towards the heart by
(A) Arteries
(B) Capillaries
(C) Veins
(D) none of these

9. __________ is essential for the formation of haemoglobin.
(A) Calcium
(B) Iron
(C) Water
(D) Carbohydrates

10. The vital functions of the body require ___________ through energy.
(A) Calcium
(B) Iron
(C) Water
(D) Carbohydrates

11. Starch is converted into maltose by
(A) diastase
(B) invertase
(C) maltase
(D) amylase

12. Co-enzyme is often formed from
(A) lipid
(B) protein
(C) inorganic ion
(D) vitamin

13. Messenger RNA is formed in
(A) nucleus
(B) chloroplast
(C) mitochondria
(D) none of these

14. Number of chromosomes in E.coli
(A) 4
(B) 6
(C) 3
(D) 1

15. Protein factory is

(A) nucleus
(B) ribosome
(C) golgi complex
(D) centriole

16. Smallest disease causing agents in plants are
(A) virion
(B) mycoplasma
(C) viroids
(D) prions

17. The main cell infected with HIV is lymphocyte
(A) helper-T
(B) B
(C) both T and B
(D) none of these

18. Pigment present in red algae is
(A) fucoxanthin
(B) phycocyanin
(C) phycoerythrin
(D) bilirubin

19. Nutrition in fungi is
(A) photosynthetic
(B) chemosynthetic
(C) completely parasitic
(D) absorptive heterotrophs

20. Fungi resemble plants because they lack
(A) cell wall
(B) cytoplasm
(C) centriole
(D) nucleus

21. “Atherosclerosis” is a major condition leading to
(A) heart attack
(B) hypertension
(C) stroke
(D) tumor

22. The body weight of a mammal is about ________ water.
(A) 60%
(B) 65%
(C) 70%
(D) 75%

Answers: Biology Mcqs

1. (B) rickets

2. (B) larger number of Red Blood Cells
3. (A) 5

4. (C) 37 °C

5. (A) A

6. (C) 70%

7. (A) White Blood cells

8. (C) Veins

9. (B) Iron

10. (D) Carbohydrates

11. (A) diastase

12. (B) protein

13. (A) nucleus

14. (D) 1

15. (B) ribosome

16. (C) viroids

17. (A) helper-T

18. (C) phycoerythrin

19. (D) absorptive heterotrophs

20. (C) centriole

21. (A) heart attack

22. (C) 70%

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