1. BIOLOGY
Unit 3 Notes:
Cellular
Respiration

2. (1) What is Respiration?
The reacting of glucose
(sugar) and oxygen gas,
producing carbon dioxide
gas, water, and ATP.

4. (2) The Chemical Equation
REACTANTS
PRODUCTS
C6H12O6 + O2  Sunlight + CO2 + H2O
Glucose
(Sugar)
Oxygen
Water
Carbon
Dioxide

5. (3) Where does it happen?
• Inside all living things
(Plants, Animals, Bacteria, etc).
• Inside the organelle called the
Mitochondrion.

7. (4) How Does It Cycle Matter + Energy?
• ENERGY:
– Transfers energy from the bonds of glucose to
the bonds of ATP.
• MATTER:
– Takes glucose and oxygen, breaks their
bonds, in order to store energy in the newly
formed ATP molecules.
– Makes un-useable sugar compounds, into
energy storing molecules used by the cell.

8. (5) Connecting Photosynthesis
& Respiration
• The glucose and oxygen produced in
photosynthesis is necessary to begin
cellular respiration.
• The carbon dioxide and water needed to
begin photosynthesis, is made during
cellular respiration.