Exploring Passive and Active Transport Mechanisms

In the canoeing metaphor, which direction requires more effort?

• Staying still

• Downstream

• Upstream

• Across the river

What is passive transport?

• Movement without a gradient

• Movement using energy

• Movement with the gradient

• Movement against the gradient

In passive transport, molecules move from:

• No movement

• High concentration to low concentration

• Low concentration to high concentration

• Random movement

What type of gradient involves the attraction between positive and negative particles?

• Concentration gradient

• Electrical gradient

• Thermal gradient

• Pressure gradient

What is required for active transport to occur?

• No energy

• Energy

• Water

• Oxygen

Which of the following is an example of active transport?

• Diffusion

• Osmosis

• Sodium-potassium pump

• Facilitated diffusion

Where are potassium ions more concentrated in a cell?

• Equally distributed

• Inside the cell

• In the nucleus

• Outside the cell

What does the sodium-potassium pump use to function?

• ATP

• Oxygen

• Glucose

• Water

What happens to the shape of the sodium-potassium pump during its operation?

• It splits into two

• It remains the same

• It changes shape

• It dissolves

What is the main role of the sodium-potassium pump in cells?

• To maintain ion gradients

• To store energy

• To transport glucose

• To produce ATP