Download 6CO2 + 6H2O + Light Energy C6H12O6 + 602 + 602 6CO2 + 6H2O

Cell Energy (Chapter 4 Section 2)
I. Energy from the sun

Photosynthesis
 Capturing energy from the sun and changing it into food
 Organisms that use photosynthesis are plants, algae, and some bacteria
6CO2
+ 6H2O + Light Energy
(Carbon dioxide)
-
(Water)
C6H12O6 + 602
(From the sun)
(Glucose)
(Oxygen)
(Carbohydrate)
The plant takes in 6 CO2 molecules and 6 H2O molecules
It captures the energy from the sun into the glucose (C6H12O6)
It is left with 6 O2 molecules which the plant then gives off
II. Energy from food
1. Cellular Respiration
 cells use oxygen to break down food
 mostly takes place in the mitochondria
C6H12O6 + 602
(Glucose)
(Carbohydrate)
-
-
(Oxygen)
6CO2 +
6H2O
(Carbon dioxide)
(Water)
+
Energy (ATP)
Cells take in glucose from food, and using oxygen from the air, breaks it
apart releasing energy
- In animals, most of that energy released maintains body temperature.
- The rest is used to make ATP (cellular energy) which keeps the cells
working.
After the energy is used, you are left with and 6 CO2 and 6 H2O molecules.
Your cells use some of the water and release some, you breathe out the
CO2
2. Fermentation



when cells get energy from food without using oxygen
sometimes produces lactic acid which causes muscles to burn
does not release as much energy as respiration
III. Connection between photosynthesis and cellular respiration
NOTE: As you can see in the
drawing, all energy comes from the
sun, one way or another!
Water
Energy
Carbon
dioxide
Cellular
Respiration
Oxygen
Glucose
(Carbohydrate)
Energy
(ATP)
Photosynthesis