Biology mcq questions test

Biology mcq questions test
Free Multiple Choice Question In Biology Online Practice Test
mcq exams multiple choice questins Biology

1. Surgical removal of both the kidneys would result in death because
(a) Water will accumulate in blood
(b) Urea will not be excreted
(c) Immune response will be suppressed
(d) Glucose will be lost from the body
Ans. (b)

2. An erythrocyte lives for approximately
(a) On week
(b) One month
(c) Four months
(d) One year
Ans. (c)

3. One of the factors required for the maturation of erythrocytes is
(a) Vitamin D
(b) Vitamin A
(c) Vitamin B12
(d) Vitamin C
Ans. (c)

4. Excess of urea in blood resulting from kidney failure is known as
(a) Ureotelic
(b) Uricotelic
(c) Urochrome
(d) Uraemia
Ans. (d)

5. Which one of the following minerals helps in erythropoietin?
(a) Mg2+
(b) Fe2+
(c) Cu2+
(d) Ca2+
Ans. (b)

6. The separation of macromolecules from molecules and ions can be accomplished by
(a) Photolysis
(b) Cytolysis
(c) Hemolysis
(d) Dialysis
Ans. (d)

7. Iron in hemoglobin exists as
(a) Unionized iron atom
(b) Ferric ions only
(c) Ferrous ions only
(d) Ferric or ferrous ions depending upon the oxygenated state
Ans. (c)

8. Amoeboid movement, a characteristic of amoebas and human macrophages, occurs when ectoplasm contracts to move endoplasm into a pseudopodium. Contraction of the ectoplasm appears to be caused by
(a) Sliding microtubules
(b) Contracting microfilaments
(c) Elongating cell walls
(d) Changes in turgor pressure
Ans. (d)

9. Axial skeleton in man is made up of
(a) 126 bones
(b) 100 bones
(c) 103 bones
(d) 80 bones
Ans. (b)

10. The advantage of RBC’s being biconcave is that?
(a) To increase surface area
(b) They can be packed up like coins
(c) They can fit into capillaries
(d) None of the above
Ans. (a)

11. Skull of man is made up of
(a) 10 bones
(b) 22 bones
(c) 30 bones
(d) 24 bones
Ans. (d)

12. Normal hemoglobin content of an adult man is
(a) 10.5 gm/100 ml of blood
(b) 12.5 gm/100 ml of blood
(c) 14.5 gm/100 ml of blood
(d) 13.5 gm/100 ml of blood
Ans. (c)

13. The total number of bones in the body of man is
(a) 205
(b) 206
(c) 216
(d) 636
Ans. (b)

14. Which blood constituent makes up more of the volume of blood?
(a) Red blood cells
(b) Plasma
(c) Blood proteins
(d) White blood cells
Ans. (b)

15. Cranium in man is made up of
(a) 10 bones
(b) 12 bones
(c) 16 bones
(d) 8 bones
Ans. (b)

16. Number of RBC in an adult man per rum3 of blood is
(a) 5,000
(b) 50,000
(c) 500,000
(d) 5,000,000
Ans. (d)

17. The abnormal increase in the total RBC count is referred to as
(a) Pneumonia
(b) Polycythemia
(c) Leucopenia
(d) Anemia
Ans. (b)

18. Foramen magnum is found on
(a) Lateral side of skull
(b) Neural canal
(c) Anterior side of skull
(d) Posterior side of skull
Ans. (d)

19. Number of RBC increases if one lives at higher altitude because
(a) There is less oxygen on mountains
(b) More heat is required in body for producing body warmth
(c) There are no germs in mountain air
(d) There is more oxygen on mountains
Ans. (a)

20. Number of cervical vertebrae in camel
(a) Same as that of whale
(b) More as that of horse
(c) less than that of rabbit
(d) more than of rabbit
Ans. (a)

21. The life span of human WBC is normally
(a) 12-13 days
(b) 80-90 days
(c) 100-120 days
(d) 20-30 days
Ans. (a)

22. Total number of bones present in forelimb of man is
(a) 25
(b) 26
(c) 30
(d) 24
Ans. (c)

23. The largest corpuscles in mammalian blood are
(a) Erythrocytes
(b) Monocytes
(c) Lymphocytes
(d) Basophiles
Ans. (b)

24. Patella is a kind of
(a) Cartilage bone
(b) Membrane bone
(c) Cartilage
(d) Sesamoid bone
Ans. (d)

25. “Leukemia” a cancer is due to
(a) Excessive production of WBCs
(b) Excessive production of RBCs
(c) Excessive production of platelets
(d) All of theses
Ans. (a)