Questions on Exocytosis and Endocytosis
20 multiple choice questions on Exocytosis and Endocytosis, along with the answers at the end.
Multiple Choice Questions: Exocytosis and Endocytosis
1. What is endocytosis?
A) The release of substances from the cell
B) The process of taking substances into the cell via vesicles
C) The movement of water across a membrane
D) The splitting of a cell
2. What is exocytosis?
A) A type of passive transport
B) The uptake of nutrients by osmosis
C) The expulsion of materials from the cell using vesicles
D) Diffusion of oxygen into the cell
3. Which structure plays a key role in both endocytosis and exocytosis?
A) Ribosome
B) Cell membrane
C) Nucleus
D) Mitochondrion
4. Which of the following best describes phagocytosis?
A) Cell drinking
B) Engulfing of large particles or cells
C) Passive diffusion
D) Formation of ATP
5. Pinocytosis is also known as:
A) Cell breathing
B) Cell shrinking
C) Cell drinking
D) Cell feeding
6. What is the primary purpose of exocytosis?
A) To absorb large molecules
B) To expel waste and secrete substances
C) To produce energy
D) To divide cells
7. What type of vesicle is involved in exocytosis?
A) Ribosomal vesicle
B) Golgi-derived vesicle
C) Nucleosome
D) Lysosome only
8. Which organelle packages materials for exocytosis?
A) Nucleus
B) Ribosome
C) Golgi apparatus
D) Centriole
9. Endocytosis requires:
A) Passive flow of molecules
B) Energy from sunlight
C) Energy input (ATP)
D) Simple diffusion
10. Which of the following is an example of receptor-mediated endocytosis?
A) Phagocytosis of bacteria
B) Cholesterol uptake by cells
C) Osmosis
D) Diffusion of gases
11. What is formed during phagocytosis to hold engulfed particles?
A) Nucleus
B) Phagosome
C) Ribosome
D) Vacuole
12. In endocytosis, vesicles are formed from:
A) Golgi body
B) Endoplasmic reticulum
C) Cell membrane
D) Lysosome
13. Exocytosis helps cells get rid of:
A) Oxygen
B) Nutrients
C) Large waste products and hormones
D) Glucose
14. Which type of transport are both endocytosis and exocytosis?
A) Passive
B) Facilitated diffusion
C) Active
D) Osmotic
15. Which of the following is NOT a form of endocytosis?
A) Pinocytosis
B) Phagocytosis
C) Receptor-mediated endocytosis
D) Exocytosis
16. In which direction does exocytosis move materials?
A) Into the cell
B) Out of the cell
C) Across the nucleus
D) Into the cytoskeleton
17. What happens to the vesicle membrane during exocytosis?
A) It disintegrates in the cytoplasm
B) It becomes part of the cell membrane
C) It is recycled in the Golgi
D) It forms lysosomes
18. Endocytosis is important for:
A) Water diffusion
B) Taking in large molecules
C) Protein synthesis
D) Cell respiration
19. Which of the following best describes receptor-mediated endocytosis?
A) Engulfing random particles
B) Engulfing fluid from the environment
C) Using specific receptors to target molecules for uptake
D) Expelling waste
20. Lysosomes often fuse with vesicles formed during phagocytosis to:
A) Strengthen the cell wall
B) Help in digestion of engulfed particles
C) Create proteins
D) Transport DNA
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Answer Key
1. B – The process of taking substances into the cell via vesicles
2. C – The expulsion of materials from the cell using vesicles
3. B – Cell membrane
4. B – Engulfing of large particles or cells
5. C – Cell drinking
6. B – To expel waste and secrete substances
7. B – Golgi-derived vesicle
8. C – Golgi apparatus
9. C – Energy input (ATP)
10. B – Cholesterol uptake by cells
11. B – Phagosome
12. C – Cell membrane
13. C – Large waste products and hormones
14. C – Active
15. D – Exocytosis
16. B – Out of the cell
17. B – It becomes part of the cell membrane
18. B – Taking in large molecules
19. C – Using specific receptors to target molecules for uptake
20. B – Help in digestion of engulfed particles
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