Unit 2 Cellular Processes- Passive Transport

Open Ended

What do you think is meant by a selective membrane in the context of this experiment?

Multiple Choice

What is the process called when water moves across a selectively permeable membrane toward a higher concentration of solute to dilute it?

• Osmosis

• Diffusion

• Active transport

• Facilitated diffusion

Open Ended

Explain how the movement of water across a selectively permeable membrane helps maintain balance in a cell. Use the diagrams to support your answer.

Multiple Select

Which of the following statements about osmosis are correct?

• Water moves toward the side with a higher concentration of solute.

• Osmosis requires energy from the cell.

• Osmosis helps balance concentrations on both sides of a membrane.

• Osmosis only occurs in plant cells.

Fill in the Blanks

During osmosis, water moves toward the side with the

concentration of dissolved particles.

Fill in the Blanks

A solution with the same concentration of dissolved substances as inside the cell is called an

solution.

Multiple Choice

In an isotonic solution, what happens to the concentration of dissolved substances inside and outside the cell?

• It remains equal

• It becomes higher inside the cell

• It becomes higher outside the cell

• It fluctuates constantly

Multiple Choice

Which of the following best describes what happens to animal and plant cells in an isotonic solution?

• Both cells maintain their normal shape and pressure.

• Both cells swell and burst.

• Both cells shrink and lose pressure.

• Animal cells burst while plant cells shrink.

Multiple Choice

Which of the following statements about plant cells in a hypotonic solution is correct?

• They shrink due to water loss.

• They swell beyond their normal size as pressure increases.

• They remain unchanged.

• They burst immediately.

Fill in the Blanks

A hypertonic solution has a

concentration of dissolved substances compared to the inside of the cell.

Multiple Select

Select all correct effects of a hypertonic solution on animal and plant cells.

• Animal cells shrink up like raisins.

• Plant cells lose pressure as the plasma membrane shrinks away from the cell wall.

• Animal cells swell and burst.

• Plant cells swell beyond their normal size.

Multiple Choice

Which type of transport moves particles across the plasma membrane without using energy?

• Passive transport

• Active transport

• Facilitated diffusion

• Osmosis

Fill in the Blanks

Active transport requires

from the cell to move materials against the concentration gradient.

Multiple Select

Which of the following are examples of passive transport?

• Simple diffusion

• Facilitated diffusion

• Active transport

• Endocytosis