+20 Questions on Passive Transport
20 multiple choice questions on Passive Transport, followed by the answer key at the end.
Multiple Choice Questions: Passive Transport
1. What is passive transport?
A) Movement of molecules using cellular energy
B) Movement of molecules against the concentration gradient
C) Movement of molecules without using energy
D) Transport of large proteins into the cell
2. Which of the following is a type of passive transport?
A) Endocytosis
B) Exocytosis
C) Osmosis
D) Protein pumps
3. Passive transport moves substances from:
A) Low concentration to high concentration
B) High concentration to low concentration
C) Equal concentration to high concentration
D) Low concentration to equal concentration
4. Which process is an example of passive transport?
A) Sodium-potassium pump
B) Osmosis
C) Phagocytosis
D) Pinocytosis
5. Which type of molecules can passively diffuse directly through the lipid bilayer?
A) Large polar molecules
B) Small nonpolar molecules
C) Ions
D) Proteins
6. What is facilitated diffusion?
A) Movement of molecules with energy input
B) Movement through vesicles
C) Passive transport using membrane proteins
D) Osmosis of water
7. Which structure is directly involved in facilitated diffusion?
A) Ribosome
B) Transport protein
C) Nucleus
D) Lysosome
8. Osmosis is a type of:
A) Active transport
B) Facilitated diffusion
C) Passive transport
D) Endocytosis
9. Which factor does NOT affect the rate of passive transport?
A) Concentration gradient
B) Membrane permeability
C) ATP availability
D) Temperature
10. A solution with the same solute concentration as the inside of a cell is:
A) Hypertonic
B) Hypotonic
C) Isotonic
D) Osmotic
11. What happens to a cell in a hypotonic solution?
A) It shrinks
B) It bursts
C) It remains the same
D) It becomes isotonic
12. What drives passive transport?
A) Chemical reactions
B) ATP
C) Concentration gradient
D) Protein synthesis
13. Which of these is not involved in passive transport?
A) Osmosis
B) Facilitated diffusion
C) Simple diffusion
D) Sodium-potassium pump
14. What type of molecules require facilitated diffusion?
A) Small gases
B) Water molecules
C) Large polar molecules
D) Lipids
15. Which term best describes equilibrium in passive transport?
A) No movement of molecules
B) Continuous but equal movement
C) High energy use
D) Protein breakdown
16. What happens when a plant cell is placed in an isotonic solution?
A) Gains water and becomes turgid
B) Loses water and shrinks
C) Maintains normal shape
D) Bursts
17. Which of the following is true of all types of passive transport?
A) Require ATP
B) Move substances up the concentration gradient
C) Do not require energy
D) Are endocytotic
18. What is the primary difference between passive and active transport?
A) Use of vesicles
B) Type of molecules moved
C) Energy usage
D) Involvement of proteins
19. Passive transport helps maintain:
A) Cell division
B) Genetic information
C) Homeostasis
D) Protein synthesis
20. During diffusion, particles tend to move:
A) From low to high concentration
B) Until equilibrium is reached
C) Against the concentration gradient
D) Only with energy input
Answer Key
1. C) Movement of molecules without using energy
2. C) Osmosis
3. B) High concentration to low concentration
4. B) Osmosis
5. B) Small nonpolar molecules
6. C) Passive transport using membrane proteins
7. B) Transport protein
8. C) Passive transport
9. C) ATP availability
10. C) Isotonic
11. B) It bursts
12. C) Concentration gradient
13. D) Sodium-potassium pump
14. C) Large polar molecules
15. B) Continuous but equal movement
16. C) Maintains normal shape
17. C) Do not require energy
18. C) Energy usage
19. C) Homeostasis
20. B) Until equilibrium is reached
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