Cell Membrane and Cell Transport

Front

What forms the channels and pumps in the phospholipid bilayer?

Back

Proteins

Front

What happens to a cell when it is placed in a solution that causes it to lose mass?

Back

Water moves out of the cell.

Front

What is the term for the process where molecules get help to cross the membrane?

Back

Facilitated diffusion.

Front

What is the term for a solution that has a higher concentration of solute compared to the inside of a cell?

Back

Hypertonic solution.

Front

What are the phosphate heads of the lipid bilayer?

Back

Hydrophilic.

Front

What is the primary function of the cell membrane?

Back

To protect the cell and regulate what enters and exits.

Front

What is the structure of the cell membrane primarily composed of?

Back

A phospholipid bilayer.

Front

What is the role of cholesterol in the cell membrane?

Back

To maintain fluidity and stability of the membrane.

Front

What is osmosis?

Back

The movement of water across a semipermeable membrane from an area of low solute concentration to an area of high solute concentration.

Front

What is the difference between passive and active transport?

Back

Passive transport does not require energy, while active transport requires energy to move substances against their concentration gradient.