Ch. 7 Cell Membrane Flashcard

Front

What regulates what enters and leaves a cell?

Back

Cell Membrane

Front

How does cholesterol affect the permeability of the cell membrane?

Back

Cholesterol increases the rigidity of the cell membrane and reduces its permeability.

Front

What type of transport is represented by the movement of molecules against their concentration gradient?

Back

Active transport

Front

What does hydrophilic mean?

Back

Water-loving

Front

Which type of molecule forms the basic structure of the cell membrane?

Back

Phospholipids

Front

What is the primary function of the cell membrane?

Back

To protect the cell and regulate the movement of substances in and out.

Front

What are the two main types of transport across the cell membrane?

Back

Active transport and passive transport.

Front

What is passive transport?

Back

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

Front

What is osmosis?

Back

The diffusion of water across a selectively permeable membrane.

Front

What role do proteins play in the cell membrane?

Back

Proteins assist in transport, act as receptors, and provide structural support.