1. Energy in A Cell

2. Why do cells need energy?
Transport materials
Cell division
Production of proteins

3. Source of Cell’s Energy
ATP
Adenosine triphosphate
Energy is available when
ATP ADP +P +energy
The energy is in the last phosphate bond
A-P-P~P A-P-P +P
+ENERGY

5. Photosynthesis
6CO2 + 6H2O C6H12O6 +6O2

6. Photosynthesis Plants use ATP but must store it
Photosynthesis- process of using the sun’s energy (light energy) to make glucose (chemical energy)
Then the plant takes glucose and makes complex carbohydrates (stored energy)

7. 2 PHASES PRODUCES ATP ,NADPH and Oxygen (Also called Calvin Cycle)
1. Light dependant- chlorophyll converts light energy into chemical energy-
PRODUCES ATP ,NADPH and Oxygen
2. Light Independent- uses CO2 to produce glucose
(Also called Calvin Cycle)

8. What happens when chlorophyll absorbs light?
The electrons in chlorophyll are raised to a higher energy level.
These electrons are passed to an electron carrier molecule: NADP+
NADP+ becomes NADPH
ADP is also converted to ATP
Occurs across the thylakoid membrane

9. Chloroplast Thylakoid contains pigment chlorophyll
Absorbs all colors of wavelengths except green