Membrane Transport

Front

What does it mean that the cell membrane is selectively permeable?

Back

Certain things can enter while others cannot.

Front

How does a cell maintain homeostasis?

Back

By regulating what enters and leaves the cell.

Front

What is a hypertonic solution?

Back

A solution that has a higher concentration of solutes compared to the inside of the cell.

Front

What is active transport?

Back

The movement of substances across a cell membrane against their concentration gradient, requiring energy.

Front

What is passive transport?

Back

The movement of substances across a cell membrane without the use of energy, following the concentration gradient.

Front

What is osmosis?

Back

The diffusion of water across a selectively permeable membrane.

Front

What happens to a cell in a hypotonic solution?

Back

Water moves into the cell, causing it to swell.

Front

What happens to a cell in a hypertonic solution?

Back

Water moves out of the cell, causing it to shrink.

Front

What is an isotonic solution?

Back

A solution that has the same concentration of solutes as the inside of the cell.

Front

What role do transport proteins play in membrane transport?

Back

They facilitate the movement of substances across the cell membrane.