Osmosis diffusion

Front

What is osmosis?

Back

Osmosis is the movement of water molecules through a selectively permeable membrane from an area of low solute concentration to an area of high solute concentration.

Front

What is diffusion?

Back

Diffusion is the movement of molecules from an area of high concentration to an area of low concentration, resulting in an even distribution of molecules.

Front

What is active transport?

Back

Active transport is the process by which cells move molecules against their concentration gradient, requiring energy in the form of ATP.

Front

What is a selectively permeable membrane?

Back

A selectively permeable membrane is a barrier that allows certain substances to pass through while blocking others.

Front

What is the difference between passive and active transport?

Back

Passive transport does not require energy and moves substances down their concentration gradient, while active transport requires energy to move substances against their gradient.

Front

What role does ATP play in active transport?

Back

ATP provides the energy required for active transport to move molecules against their concentration gradient.

Front

What happens to a cell in a hypertonic solution?

Back

In a hypertonic solution, water moves out of the cell, causing it to shrink.

Front

What happens to a cell in a hypotonic solution?

Back

In a hypotonic solution, water moves into the cell, causing it to swell and potentially burst.

Front

What is isotonic solution?

Back

An isotonic solution has the same solute concentration as the cell, resulting in no net movement of water.

Front

What is the significance of the concentration gradient?

Back

The concentration gradient is the difference in concentration of a substance between two areas, driving the movement of molecules during diffusion and osmosis.