Cell Transport and Solutions Flashcard

Front

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

Back

Only some things can cross the membrane.

Front

What is the primary function of the cell membrane?

Back

Controls what enters and leaves the cell.

Front

What is osmosis?

Back

The movement of water molecules across a semi-permeable membrane from an area of high concentration to an area of low concentration.

Front

What is the main difference between passive transport and active transport?

Back

Active transport requires energy, while passive transport does not.

Front

What happens to cells in a hypotonic solution?

Back

They swell and may burst due to excess water intake.

Front

What is a hypertonic solution?

Back

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

Front

What is an isotonic solution?

Back

A solution with the same concentration of solutes as the inside of the cell.

Front

What is diffusion?

Back

The movement of molecules from an area of high concentration to an area of low concentration.

Front

What is the role of transport proteins in the cell membrane?

Back

They facilitate the movement of substances across the membrane.

Front

What is the significance of the concentration gradient in cell transport?

Back

It drives the movement of substances during passive transport.