Cell Membrane and Transport

Front

What is the function of the plasma membrane?

Back

To regulate what enters and leaves the cell.

Front

What are the two parts of a phospholipid called?

Back

Hydrophilic Head and Hydrophobic Tail.

Front

In passive transport, the concentration gradient goes from...

Back

High to low.

Front

What does 'bilayer' mean?

Back

Two layers.

Front

If a cell is placed in an environment with MORE oxygen OUTSIDE the cell than inside, what will happen?

Back

The cell will gain oxygen.

Front

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

Back

Phospholipids and proteins.

Front

What is the role of proteins in the plasma membrane?

Back

They assist in transport and communication across the membrane.

Front

Define selective permeability.

Back

The ability of the plasma membrane to allow certain substances to pass while blocking others.

Front

What is diffusion?

Back

The movement of molecules from an area of high concentration to an area of low concentration.

Front

What is osmosis?

Back

The diffusion of water across a selectively permeable membrane.