Important Bio MCQs

1. Digitigrade mammals try to walk on their:
A. Tips of toes
B. Soles
C. Digits
D. None of these

2. ________ comprise of 50% of the total dry weight of a cell:
A. Sucrose
B. Starch
C. Glycogen
D. Proteins

3. What is an A band called while having a lighter stripe in its midsection?
A. H-zone
B. Z-line
C. A-zone
D. M-line

4. Proteins are polymers of ________:
A. Amino acids
B. Nucleotides
C. Fatty acids
D. Isoprenoid units

5. Every intervertebral disc is composed of:
A. Stomium globuses
B. Nucleus pulposus
C. Annulus fibrosus
D. Both B & C

6. The element that differentiates proteins from carbohydrates is:
A. H
B. N
C. C
D. S

7. Myofibrils of muscle fibre have a diameter of:
A. 2-4 mm
B. 3-7 mm
C. 1-2 mm
D. 1-5 mm

8. Amino acids discovered in tissues & cells so far are:
A. 120
B. 170
C. 210
D. 185

9. _________ are involved in earthworm’s accordion-like movement:
A. Muscles
B. Setae
C. Cilia
D. Both A & B

10. ________ plays a vital role in the movement of Euglena:
A. Pseudopodium
B. Myonemes
C. Cilium
D. Flagellum

11. What leads to a haptonastic movement?
A. Pressure
B. Contact
C. Water
D. Light

12. By means of ________ movement takes place in amoeba:
A. Pseudopodium
B. Myonemes
C. Cilium
D. Flagellum