Lysosomes MCQ Quiz
1. Lysosomes are also known as:
A. Power house of cell
B. Suicide bags of cell
C. Brain of cell
D. Protein factory
Correct Answer: B. Suicide bags of cell
2. Lysosomes were discovered by:
A. Watson
B. Crick
C. Christian de Duve
D. Novikoff
Correct Answer: C. Christian de Duve
3. Size of lysosomes is approximately:
A. 1–2 µm
B. 0.2–0.8 µm
C. 5–10 µm
D. 10–15 µm
Correct Answer: B. 0.2–0.8 µm
4. Lysosomes are formed from:
A. Nucleus
B. Endoplasmic reticulum
C. Golgi apparatus
D. Ribosomes
Correct Answer: C. Golgi apparatus
5. Enzymes present in lysosomes are mainly:
A. Oxidative enzymes
B. Digestive enzymes
C. Acid hydrolases
D. Reductive enzymes
Correct Answer: C. Acid hydrolases
6. Lysosomes can digest all except:
A. Proteins
B. Lipids
C. Nucleic acids
D. Cellulose
Correct Answer: D. Cellulose
7. Lysosomes are most abundant in:
A. Muscle cells
B. Neurons
C. Phagocytic cells
D. RBCs
Correct Answer: C. Phagocytic cells
8. Secondary lysosomes are also called:
A. Autophagosomes
B. Ribosomes
C. Digestive vacuoles
D. Centrosomes
Correct Answer: C. Digestive vacuoles
9. Autophagy refers to:
A. Cell division
B. Digestion of foreign particles
C. Digestion of own cell parts
D. Protein synthesis
Correct Answer: C. Digestion of own cell parts
10. In plant cells, lysosomal function is performed by:
A. Mitochondria
B. Ribosomes
C. Vacuoles and sphaerosomes
D. Plastids
Correct Answer: C. Vacuoles and sphaerosomes
11. Lysosomal membrane is strengthened by:
A. Vitamin A
B. Cholesterol
C. Bile salts
D. Radiation
Correct Answer: B. Cholesterol
12. Excess of which vitamin makes lysosome fragile?
A. Vitamin C
B. Vitamin D
C. Vitamin A
D. Vitamin K
Correct Answer: C. Vitamin A
13. Hurler’s disease is caused due to:
A. Excess enzymes
B. Absence of lysosomal enzymes
C. Mitochondrial defect
D. Ribosomal defect
Correct Answer: B. Absence of lysosomal enzymes
14. Accumulation of residual bodies causes:
A. Increased metabolism
B. Cell division
C. Diseases
D. Protein synthesis
Correct Answer: C. Diseases
15. Fruit rotting can be controlled by inhibiting:
A. Protease
B. Amylase
C. Polygalacturonase
D. Lipase
Correct Answer: C. Polygalacturonase
