ACTIVE TRANSPORT H L B I O L O G Y C E L L S & B I O M O L E C U L E S

ACTIVE TRANSPORT Active transport involves the

movement of substances AGAINST their concentration gradient.

This means ENERGY must be used.

The unit of energy in cells is called ATP

ATP ATP stands for Adenosine TriPhosphate

Each ATP molecule is made up of one adenosine molecule and THREE phosphate molecules

Energy is released when one of the phosphate molecules is released.

SODIUM POTASSIUM PUMP

QUESTIONS 1. Explain the difference between passive and active transport 2. Draw a series of diagrams to explain the sodium-potassium

pump 3. Research the processes of endocytosis and exocytosis

a. Draw a flow chart to show each process, including notes on each step

b. explain the difference between each process 4. Explain why endocytosis and exocytosis are known as examples of active transport 5. Research the condition Cystic Fibrosis and explain how it relates to active transport pumps.