Cell membrane and Diffusion

Front

What is the main function of the cell membrane?

Back

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

Front

What are phospholipids?

Back

Phospholipids are molecules that make up the cell membrane, consisting of a hydrophilic 'head' and two hydrophobic 'tails'.

Front

Define hydrophilic.

Back

Hydrophilic refers to substances that are attracted to water and can dissolve in it.

Front

Define hydrophobic.

Back

Hydrophobic refers to substances that repel water and do not dissolve in it.

Front

What is the structure of a phospholipid?

Back

A phospholipid has a glycerol backbone, two fatty acid tails, and a phosphate group.

Front

What role do integral proteins play in the cell membrane?

Back

Integral proteins assist in the transport of substances across the cell membrane.

Front

What is the function of cholesterol in the cell membrane?

Back

Cholesterol helps to stabilize the cell membrane's fluidity.

Front

What is diffusion?

Back

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

Front

What is osmosis?

Back

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

Front

What is a selectively permeable membrane?

Back

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