AQA - Biology - Transport in cells

What is the primary difference between diffusion and active transport in cells?

• Diffusion requires energy, while active transport does not.

• Active transport requires energy, while diffusion does not.

• Both processes require energy.

• Neither process requires energy.

Which of the following is an example of diffusion in cells?

• Movement of glucose into a cell against its concentration gradient.

• Movement of oxygen from an area of high concentration to an area of low concentration.

• Movement of sodium ions out of a cell using ATP.

• Movement of water through a semi-permeable membrane.

Which factor does NOT affect the rate of osmosis?

• Temperature

• Concentration gradient

• Surface area

• Type of solute

How does temperature affect the rate of diffusion?

• Higher temperatures decrease the rate of diffusion.

• Higher temperatures increase the rate of diffusion.

• Temperature has no effect on diffusion.

• Lower temperatures increase the rate of diffusion.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Which of the following best describes osmosis?

• Movement of solutes from an area of high concentration to an area of low concentration.

• Movement of water molecules through a semi-permeable membrane from an area of low solute concentration to an area of high solute concentration.

• Movement of water molecules through a semi-permeable membrane from an area of high solute concentration to an area of low solute concentration.

• Movement of gases through a semi-permeable membrane.

Which of the following is a similarity between diffusion and active transport?

• Both processes require energy.

• Both processes move substances from an area of low concentration to an area of high concentration.

• Both processes involve the movement of substances across cell membranes.

• Both processes are passive.

What is the main energy source for active transport in cells?

• Glucose

• ATP

• Oxygen

• Water

Tags

NGSS.MS-LS1-7