Diffusion vs. Osmosis Quiz

What is the main difference between diffusion and osmosis?

• Diffusion requires energy, while osmosis does not.

• Osmosis involves the movement of solvents, while diffusion involves solutes.

• Diffusion can only occur in liquids, while osmosis can occur in gases as well.

• Osmosis requires a semi-permeable membrane, while diffusion does not.

Which term describes the movement of molecules from an area of high concentration to an area of low concentration?

• Active transport

• Osmosis

• Diffusion

• Facilitated diffusion

What does it mean when a cell membrane is described as selectively permeable?

• It allows all molecules to pass through freely.

• It does not allow any molecules to pass through.

• It only allows certain molecules to pass through.

• It changes permeability based on the cell's needs.

What is facilitated diffusion?

• The movement of water molecules across a cell membrane without the need for energy.

• The movement of molecules across a cell membrane through protein channels without the need for energy.

• The active transport of molecules against the concentration gradient, requiring energy.

• The process by which cells engulf particles outside their cell membrane.

Which of the following processes requires energy?

• Diffusion

• Osmosis

• Facilitated diffusion

• Active transport

In the context of cell membrane permeability, what does a concentration gradient refer to?

• The difference in the concentration of a substance between two regions.

• The total concentration of all substances within a cell.

• The uniform distribution of a substance across a membrane.

• The movement of water through a semi-permeable membrane.

Which process is directly responsible for the uptake of glucose molecules into a cell?

• Osmosis

• Simple diffusion

• Facilitated diffusion

• Active transport

What role do protein channels play in a cell membrane?

• They provide structural support to the membrane.

• They facilitate the diffusion of specific molecules across the membrane.

• They prevent any molecules from passing through the membrane.

• They actively pump molecules in and out of the cell, requiring energy.

Tags

NGSS.HS-LS2-3

How does the concentration gradient affect the rate of diffusion?

• A higher concentration gradient increases the rate of diffusion.

• A higher concentration gradient decreases the rate of diffusion.

• The concentration gradient has no effect on the rate of diffusion.

• Only the temperature, not the concentration gradient, affects the rate of diffusion.

Which statement best describes active transport?

• It is the movement of molecules from an area of lower concentration to an area of higher concentration without the use of energy.

• It is the movement of water molecules across a semi-permeable membrane from an area of low solute concentration to an area of high solute concentration.

• It involves the movement of molecules across a cell membrane from an area of lower concentration to an area of higher concentration, requiring energy.

• It is a passive process that does not require energy and relies on the natural motion of molecules.