AP Biology Unit 2 Review 24-25

Front

What are the two main types of cells?

Back

Prokaryotes and Eukaryotes.

Front

What is a key difference between prokaryotic and eukaryotic cells?

Back

Eukaryotes have a nucleus, while prokaryotes do not.

Front

What are the two main functions of proteins in the cell membrane?

Back

1) Act as gatekeepers to control what enters and exits the cell. 2) Serve as enzyme receptors embedded in the membrane.

Front

What type of cellular transport is characterized by the movement of materials out of the cell?

Back

Exocytosis.

Front

How does rinsing swollen gums with warm salt water help?

Back

Water in the gums will diffuse out of the cells.

Front

In facilitated diffusion, what type of proteins do molecules move through?

Back

Channel proteins.

Front

What is the role of carbohydrates in the cell membrane?

Back

They are involved in cell recognition and signaling.

Front

What is 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 function of phospholipids in the cell membrane?

Back

They form the bilayer that makes up the cell membrane, providing structure and protection.