cell membrane transport

Front

What forms the channels and pumps in the phospholipid bilayer?

Back

Proteins

Front

What is embedded in the phospholipid bilayer?

Back

Proteins

Front

What does a cell need to transport particles by active transport?

Back

Energy

Front

What is one major difference between passive and active transport?

Back

Active transport uses energy; passive transport does not.

Front

Describe the movement of molecules going through the proteins in the illustration.

Back

Molecules are moving from a lower concentration to a higher concentration.

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 molecules across the cell membrane without the use of energy.

Front

Define active transport.

Back

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

Front

What role do carbohydrates play in the cell membrane?

Back

They are involved in cell recognition and signaling.

Front

What is the fluid mosaic model?

Back

A model that describes the structure of the cell membrane as a mosaic of various proteins floating in or on the fluid lipid bilayer.