1. ATP Adenosine Tri-Phosphate

2. DRAW THIS ATP MOLECULE IN YOUR NOTEBOOK!
ATP & ADP
1. ATP: Adenosine triphosphate
2. adenine + ribose + 3 phosphates
3. carries energy in Phosphate Bond.
*Bond farthest from ribose stores the most sugar*
4. Source of all cell energy – “currency” (money) of the cell; different cell functions require different amounts of ATP
DRAW THIS ATP MOLECULE IN YOUR NOTEBOOK!
Adenine
3 Phosphate groups
Ribose

3. How does ATP release energy?
5. When one phosphate group breaks off, energy is released
6. ADP can reform into ATP by bonding phosphate group

4. 7. ADP: ADENOSINE DIPHOSPHATE 8. Adenine + ribose + 2 phosphates
9. ADP: Molecule that results from ATP losing one P
fill in the labels in the picture in your notebook!
ADP
ATP
Energy
Partially
charged
battery
Fully
Adenosine diphosphate (ADP) + Phosphate
Adenosine triphosphate (ATP)

5. How do cells use energy in ATP?
When the phosphate bond is broken, the cell can use the released energy for different processes:
In photosynthesis, for making glucose
making new molecules - such as enzymes, cell membrane components, organelles, etc.
to maintain homeostasis, transmit nerve impulses, move cilia, remove wastes, etc.

6. ATP – ADP cycle in cells 10. In photosynthesis:
ATP is PRODUCED during Light-dependent reactions
ATP is USED during Dark-dependent reactions to make sugar and sustain plant cell functions
11. In cell respiration:
ATP is PRODUCED when breaking down sugars from food
ATP is USED to sustain cell functions