Front

What forms the channels and pumps in the phospholipid bilayer?

Back

Proteins

Front

How many layers of molecules is the cell membrane?

Back

2

Front

What does the term homeostasis mean?

Back

Balanced internal chemical and physical conditions of the cell.

Front

This organelle is in ALL cells and regulates what enters and leaves a cell.

Back

Cell Membrane

Front

In reference to the cell membrane, what does the term 'semi-permeable' or 'selectively permeable' mean?

Back

Allows certain molecules to pass through but not others.

Front

What is the primary function of the cell membrane?

Back

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

Front

What are phospholipids?

Back

Molecules that make up the cell membrane, consisting of hydrophilic heads and hydrophobic tails.

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 components that move fluidly.

Front

What is the difference between passive and active transport?

Back

Passive transport does not require energy, while active transport requires energy (ATP) to move substances against their concentration gradient.