Cell Transport Flashcard

Front

The cell membrane is made up of a bilayer of:

Back

Phospholipids

Front

Endocytosis moves molecules out of the cell.

Back

False

Front

In a saltwater solution, the salt is the:

Back

Solute

Front

Macrophages help our bodies fight infection.

Back

True

Front

The cell membrane is semi-permeable. What does this mean?

Back

Some molecules can cross, but others cannot

Front

What is the primary function of the cell membrane?

Back

To protect the cell and regulate what enters and exits.

Front

Define diffusion.

Back

The movement of molecules from an area of higher concentration to an area of lower concentration.

Front

What is osmosis?

Back

The diffusion of water across a semi-permeable membrane.

Front

What is the role of transport proteins in the cell membrane?

Back

To facilitate the movement of substances across the membrane.

Front

What is active transport?

Back

The movement of molecules against their concentration gradient, requiring energy.