Osmosis and Diffusion

Front

What is osmosis?

Back

The diffusion of water across a selectively permeable membrane.

Front

What happens to an animal cell in a hypotonic solution?

Back

It swells due to water entering the cell.

Front

Define hypertonic solution.

Back

A solution with a higher concentration of solutes compared to another solution.

Front

What is facilitated diffusion?

Back

A type of passive transport that allows large molecules, like glucose, to cross the membrane with the help of proteins.

Front

What role do aquaporins play in cells?

Back

Aquaporins are proteins that facilitate the transport of water across cell membranes.

Front

What is diffusion?

Back

The movement of molecules from an area of higher concentration to an area of lower concentration.

Front

What is the difference between active transport and passive transport?

Back

Active transport requires energy to move substances against their concentration gradient, while passive transport does not.

Front

What is an isotonic solution?

Back

A solution with the same concentration of solutes as another solution, resulting in no net movement of water.

Front

What occurs during active transport?

Back

Substances are moved across a membrane against their concentration gradient, often using energy from ATP.

Front

What is the significance of the selectively permeable membrane?

Back

It allows certain substances to pass while blocking others, maintaining homeostasis in the cell.