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CELLULAR ENERGY.

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Presentation on theme: "CELLULAR ENERGY."— Presentation transcript:

1 CELLULAR ENERGY

2 All Cells Need Energy Cells need energy to do a variety of work:
Making new molecules. Building membranes and organelles. Moving molecules in and out of the cell. (Maintaining homeostasis) Movement.

3 What Is ATP? ATP – adenosine triphosphate is a molecule made up of an adenine+ ribose, (adenosine), and 3 phosphate groups. Adenine phosphate groups Ribose

4 How Does ATP Work? Energy is stored in the bond between the second and third phosphate group. When the bond is broken, energy is released and ADP is formed. Adenine Ribose

5 ADP-ATP is a cycle

6 ATP – Energy Currency Within a cell, formation of ATP from ADP and phosphate occurs over and over, storing energy each time. As the cell uses energy, ATP breaks down repeatedly to release energy and form ADP and phosphate.

7 Storing Energy AMP + P  ADP
A P  AMP adenosine phosphate  adenosine monophosphate AMP P  ADP adenosine monophosphate phosphate  adenosine diphosphate ADP P  ATP adenosine diphosphate phosphate  adenosine triphosphate

8 Releasing Energy ATP  ADP + P + ENERGY
adenosine triphosphate  adenosine diphosphate + phosphate+ energy


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