+20 Questions on Active Transport
20 multiple choice questions on Active Transport, followed by the answer key at the end.
Multiple Choice Questions: Active Transport
1. What is active transport?
A) Movement of substances without energy input
B) Movement of molecules from high to low concentration
C) Movement of molecules against the concentration gradient using energy
D) Passive movement of water
2. Which molecule provides energy for active transport?
A) DNA
B) RNA
C) ATP
D) Glucose
3. Which of the following is an example of active transport?
A) Osmosis
B) Diffusion
C) Sodium-potassium pump
D) Facilitated diffusion
4. Active transport differs from passive transport because it:
A) Moves water only
B) Requires a membrane
C) Requires energy input
D) Happens only in prokaryotes
5. The sodium-potassium pump moves:
A) 3 Na⁺ out, 2 K⁺ in
B) 3 K⁺ out, 2 Na⁺ in
C) 2 Na⁺ out, 3 K⁺ in
D) Only sodium in both directions
6. Which direction does active transport move substances?
A) With the concentration gradient
B) Against the concentration gradient
C) Along an electrochemical equilibrium
D) Into the nucleus only
7. Which of the following is NOT an example of active transport?
A) Sodium-potassium pump
B) Endocytosis
C) Facilitated diffusion
D) Exocytosis
8. What is required for active transport to occur?
A) Low temperature
B) High pH
C) Carrier proteins and ATP
D) DNA and ribosomes
9. Active transport is essential for:
A) Equalizing concentrations
B) Cell shrinking
C) Moving materials into crowded areas of the cell
D) Passive movement of gases
10. Endocytosis and exocytosis are forms of:
A) Passive diffusion
B) Osmosis
C) Bulk active transport
D) Ion channel transport
11. Which type of protein is used in active transport?
A) Structural protein
B) Transport/carrier protein
C) Enzymatic protein
D) Hormone receptor
12. In active transport, molecules move:
A) Toward a lower concentration
B) With the concentration gradient
C) Toward a higher concentration
D) Through osmosis
13. What is endocytosis?
A) Movement of molecules out of a cell
B) Transport of oxygen across membranes
C) The process of taking materials into a cell by vesicles
D) Passive movement of solutes
14. Which term describes the expulsion of materials from the cell?
A) Phagocytosis
B) Exocytosis
C) Endocytosis
D) Pinocytosis
15. Phagocytosis involves the intake of:
A) Fluids
B) Gases
C) Large solid particles
D) Ions
16. Which is a type of endocytosis?
A) Exocytosis
B) Pinocytosis
C) Osmosis
D) Facilitated diffusion
17. Why does a cell use active transport?
A) To save energy
B) To move substances to where they are already abundant
C) To concentrate substances inside or outside the cell
D) To release carbon dioxide
18. Which organelle packages materials for exocytosis?
A) Nucleus
B) Golgi apparatus
C) Ribosome
D) Lysosome
19. What role does ATP play in active transport?
A) It acts as a solute
B) It breaks down proteins
C) It provides energy
D) It carries oxygen
20. Pinocytosis is also known as:
A) Cell breathing
B) Cell drinking
C) Cell splitting
D) Cell shrinking
Answer Key
1. C) Movement of molecules against the concentration gradient using energy
2. C) ATP
3. C) Sodium-potassium pump
4. C) Requires energy input
5. A) 3 Na⁺ out, 2 K⁺ in
6. B) Against the concentration gradient
7. C) Facilitated diffusion
8. C) Carrier proteins and ATP
9. C) Moving materials into crowded areas of the cell
10. C) Bulk active transport
11. B) Transport/carrier protein
12. C) Toward a higher concentration
13. C) The process of taking materials into a cell by vesicles
14. B) Exocytosis
15. C) Large solid particles
16. B) Pinocytosis
17. C) To concentrate substances inside or outside the cell
18. B) Golgi apparatus
19. C) It provides energy
20. B) Cell drinking
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