Membranes and Cell Transport

Front

What is another term for 'selectively permeable'?

Back

Semipermeable

Front

What forms the channels and pumps in the phospholipid bilayer?

Back

Proteins

Front

If a red blood cell is put in a salt solution, what will happen to the cell?

Back

Shrink

Front

Which of the following is responsible for getting large or charged (polar) molecules across the cell membrane?

Back

Proteins (specifically transport proteins)

Front

Which type of transport requires an input of energy?

Back

Active Transport

Front

What is the primary function of the cell membrane?

Back

To protect the cell and regulate what enters and exits.

Front

Define passive transport.

Back

The movement of substances across a cell membrane without the use of energy.

Front

What is osmosis?

Back

The diffusion of water across a selectively permeable membrane.

Front

What is the role of cholesterol in the cell membrane?

Back

To maintain fluidity and stability of the membrane.

Front

What is a concentration gradient?

Back

A difference in the concentration of a substance across a space.