The Cell Membrane & Transport

It controls the movement of substances in and out of the cell.

It produces energy for the cell.

It stores genetic information.

It synthesizes proteins.

Proteins

Carbohydrates

Phospholipid bilayer

Nucleic acids

The head is hydrophobic and the tail is hydrophilic.

Both head and tail are hydrophilic.

The head is hydrophilic and the tail is hydrophobic.

Both head and tail are hydrophobic.

It is made of two layers of phospholipids.

The hydrophilic heads face outward toward water.

The hydrophobic tails face inward away from water.

It allows all molecules to pass freely.

Channel proteins

Lipid molecules

Carbohydrate chains

Cholesterol

Transport molecules across the membrane

Store genetic information

Produce energy for the cell

Break down waste products

Diffusion

Osmosis

Facilitated Diffusion

Endocytosis

It shrinks as water leaves the cell.

It swells as water enters the cell.

It remains the same size.

It bursts due to excess water.

It requires transport proteins.

It moves molecules from high to low concentration.

It requires energy from the cell.

It occurs across the plasma membrane.

Facilitated diffusion

Osmosis

Active transport

Passive transport