Take this Quiz: GCSE Biology: Transport in Cells | Zestly

Question 1

Which of the following factors increase the rate of diffusion across a cell membrane?

Accepted Answer

Increasing the temperature of the system.

Question 2

Osmosis is specifically defined as the movement of which substance across a partially permeable membrane?

Accepted Answer

Water molecules.

Question 3

Why do root hair cells in plants require active transport to absorb mineral ions from the soil?

Accepted Answer

Because the concentration of minerals is lower in the soil than inside the root hair cells.

Question 4

Which of the following are true regarding the surface area to volume ratio in large organisms?

Answer

As an organism increases in size, its surface area to volume ratio decreases.

Answer

Large organisms have a high surface area to volume ratio to facilitate gas exchange.

Answer

Large organisms require specialized exchange surfaces because their surface area to volume ratio is too small for simple diffusion.

Answer

Small organisms have a lower surface area to volume ratio than large organisms.

Question 5

During gas exchange in the human lungs, which direction do oxygen and carbon dioxide move by diffusion?

Answer

Oxygen moves from the alveoli into the blood; carbon dioxide moves from the blood into the alveoli.

Answer

Oxygen moves from the blood into the alveoli; carbon dioxide moves from the alveoli into the blood.

Answer

Both oxygen and carbon dioxide move from the alveoli into the blood.

Answer

Both oxygen and carbon dioxide move from the blood into the alveoli.