UNIT 3 REVIEW (Cell Membrane & Homeostasis)

Front

What part of the cell regulates what can enter and leave the cell?

Back

Cell Membrane

Front

The movement of water in and out of cells is called?

Back

Osmosis

Front

What is another word that can be used to describe 'homeostasis'?

Back

Stable

Front

What is the point of a negative feedback loop?

Back

To make sure the conditions in the body remain stable.

Front

A ______________ is composed of a phosphate and glycerol head and 2 fatty acid chain tails.

Back

Phospholipid.

Front

What is the primary function of the cell membrane?

Back

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

Front

Define homeostasis.

Back

The process by which living organisms maintain a stable internal environment.

Front

What is osmosis?

Back

The diffusion of water across a selectively permeable membrane.

Front

What role do phospholipids play in the cell membrane?

Back

They form the bilayer that makes up the cell membrane.

Front

What is active transport?

Back

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