Important Bio MCQs

By: Prof. Dr. Fazal Rehman | Last updated: May 14, 2025

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