Homeostasis Review

Front

What is homeostasis?

Back

Homeostasis is the process by which living organisms maintain a stable internal environment despite changes in external conditions.

Front

What does selectively permeable membrane mean?

Back

A selectively permeable membrane allows certain substances to pass through while blocking others.

Front

Define isotonic solution.

Back

An isotonic solution has the same concentration of solutes as another solution, resulting in no net movement of water across the membrane.

Front

What is a hypertonic solution?

Back

A hypertonic solution has a higher concentration of solutes compared to another solution, causing water to move out of the cell.

Front

What is a hypotonic solution?

Back

A hypotonic solution has a lower concentration of solutes compared to another solution, causing water to move into the cell.

Front

Explain osmosis.

Back

Osmosis is the diffusion of water across a selectively permeable membrane from an area of lower solute concentration to an area of higher solute concentration.

Front

What happens to a cell in a hypertonic solution?

Back

In a hypertonic solution, a cell will lose water and may shrivel due to the higher concentration of solutes outside the cell.

Front

What happens to a cell in a hypotonic solution?

Back

In a hypotonic solution, a cell will gain water and may swell or burst due to the lower concentration of solutes outside the cell.

Front

What is the role of the cell membrane in homeostasis?

Back

The cell membrane regulates the movement of substances in and out of the cell, helping to maintain homeostasis.

Front

Define diffusion.

Back

Diffusion is the movement of particles from an area of higher concentration to an area of lower concentration.