Cell Membrane and Cell Transport

Front

What is the function of the cell membrane?

Back

The cell membrane controls what enters and exits the cell, providing protection and support.

Front

Define selectively permeable membrane.

Back

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

Front

What is passive transport?

Back

Passive transport is the movement of substances across a cell membrane without the use of energy, moving from high to low concentration.

Front

What is active transport?

Back

Active transport is the movement of substances against their concentration gradient, from low to high concentration, requiring energy.

Front

What happens to a cell in a hypotonic solution?

Back

The cell will swell and may burst due to water moving into the cell.

Front

What is osmosis?

Back

Osmosis is the diffusion of water across a selectively permeable membrane.

Front

What is a hypertonic solution?

Back

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

Front

What is equilibrium in the context of cell transport?

Back

Equilibrium is reached when the concentration of molecules is equal inside and outside the cell.

Front

What is diffusion?

Back

Diffusion is the movement of molecules from an area of high concentration to an area of low concentration.

Front

What role do transport proteins play in cell membranes?

Back

Transport proteins help move substances across the cell membrane, either passively or actively.