1. Photosynthesis and Respiration Lesson 6
Organisms that can make their own food =
producers or
autotrophs
What is the process used to make this food?
PHOTOSYNTHESIS =
Light put together
Process by which organisms use energy from sunlight to make their own food.
What organelle does this process take place in?
Chloroplasts
What is the green substance that captures the sun’s energy?
Chlorophyll

2. (Glucose)
Photosynthesis

3. + + CO2 + + 6 6 6 H2O C6H12O6 O2 What is made in the end? oxygen
What four things are needed for photosynthesis? +
Glucose
(Sugar)
sunlight
Oxygen
Carbon Dioxide
Water
chlorophyll
CO2 + 6 6
sunlight
H2O +
C6H12O6 6 O2
chlorophyll
(Raw Materials/Reactants)
(Products)
How does the plant get these raw materials/ reactants?
Water—
roots
Chlorophyll—
already there
Carbon Dioxide—taken in through the stomata (openings on
underside of leaf)
Sunlight—
captures
What is the waste product produced during photosynthesis?
oxygen

4. For sure happens in humans—does it take place in plants?
If photosynthesis = making food for energy, what process breaks down food to release energy?
CELLULAR RESPIRATION
a.k.a aerobic respiration
Oxygen
What gas is necessary for this process?
In which organelle does cellular respiration occur?
Mitochondria
What is the name of the energy made during this process?
ATP
Adenosine Triphosphate
For sure happens in humans—does it take place in plants?
YES

5. What is necessary for cellular respiration to take place?
Carbon Dioxide + +
Water
ATP
Glucose +
Oxygen + 6
H2O +
ATP
C6H12O6 + 6 O2 6
CO2
What is the waste product of cellular respiration?
Carbon Dioxide

6. Let’s compare and contrast photosynthesis and cellullar respiration.
Photosynthesis- (Plants)
6CO2 + 6H2O sunlight / chlorophyll  C6H12O6 + 6O2
Cellular Respiration (Humans)
C6H12O6 + 6O2 6CO2 + 6H2O + ATP
Look at the equation for photosynthesis-look at the equation for cellular respiration. What do you see?
How are they the same? How are they different?

7. The carbon-oxygen cycle
The movement of carbon and oxygen through the environment is known as
The carbon-oxygen cycle
carbon dioxide
Through plants take in & release
photosynthesis,
oxygen
Through organisms take in & release
cellular respiration,
oxygen
carbon dioxide
Other processes also add carbon dioxide to the air!!
Example--burning fossil fuels (oil, coal, wood, natural gas) and other decaying organic matter
Organic Material – Material from living things.

9. + + + +