Comparing Passive and Active Transport Mechanisms

What is the main difference between passive and active transport?

• Passive transport requires ATP, while active transport does not.

• Passive transport involves large molecules, while active transport involves small molecules.

• Passive transport moves molecules from low to high concentration, while active transport moves them from high to low concentration.

• Passive transport moves molecules from high to low concentration, while active transport moves them from low to high concentration.

Which of the following is an example of passive transport?

• Diffusion

• Sodium-potassium pump

• Endocytosis

• Exocytosis

What is osmosis?

• The active transport of glucose

• The diffusion of water

• The active transport of sodium

• The diffusion of oxygen

How does facilitated diffusion help glucose enter cells?

• By using osmosis to move glucose into the cells

• By breaking down glucose into smaller molecules

• By opening protein channels that allow glucose to pass through

• By using ATP to pump glucose into the cells

What is required for active transport to occur?

• No energy

• A low concentration of molecules

• A high concentration of molecules

• ATP energy

What role does the sodium-potassium pump play in neurons?

• It diffuses sodium into the neuron

• It pumps sodium out and potassium into the neuron

• It pumps glucose into the neuron

• It diffuses potassium out of the neuron

How many sodium ions are pumped out of the neuron by the sodium-potassium pump?

• Four

• Three

• Two

• One

What is the function of the contractile vacuole in a paramecium?

• To pump sodium into the cell

• To pump glucose into the cell

• To pump potassium out of the cell

• To pump water out of the cell

What is endocytosis?

• The diffusion of water into the cell

• The active transport of glucose into the cell

• The process of releasing materials from the cell

• The process of taking materials into the cell

What happens during exocytosis?

• Glucose is actively transported into the cell

• Water diffuses into the cell

• Materials are released from the cell

• Materials are taken into the cell