Passive vs. Active Transport Explained

What does it mean for a cell membrane to be selectively permeable?

• It allows only water to pass through.

• It blocks all substances from passing through.

• It allows all substances to pass through.

• It allows some substances to pass through while blocking others.

Which of the following is a type of passive transport?

• Endocytosis

• Diffusion

• Phagocytosis

• Exocytosis

How do molecules move during diffusion?

• From an area of lower concentration to an area of higher concentration

• They move randomly without any concentration gradient

• From an area of higher concentration to an area of lower concentration

• They do not move at all

What is an example of diffusion in everyday life?

• Freezing water

• Mixing oil and water

• Boiling water

• Spraying air freshener in a room

What is osmosis specifically concerned with?

• Movement of oxygen

• Movement of carbon dioxide

• Movement of water

• Movement of glucose

What happens to water molecules during osmosis?

• They move from an area of higher concentration to an area of lower concentration

• They do not move at all

• They move from an area of lower concentration to an area of higher concentration

• They move randomly without any concentration gradient

What is required for active transport to occur?

• Only water

• Cellular energy

• Only oxygen

• No energy

How is active transport similar to riding a bike uphill?

• It is a passive process

• It requires energy to move against a gradient

• It requires no effort

• It happens naturally without any input

When would a cell use active transport?

• To move particles randomly

• To move particles without any energy

• To move particles from a lower concentration to a higher concentration

• To move particles from a higher concentration to a lower concentration

Why is the cartoon of Garfield learning by osmosis incorrect?

• Because osmosis refers to the diffusion of water

• Because osmosis refers to the diffusion of glucose

• Because osmosis refers to the diffusion of oxygen

• Because osmosis refers to the diffusion of carbon dioxide