1. The process of producing the energy needed for metabolic reactions
Cellular Respiration
The process of producing the energy needed for metabolic reactions
Amoeba Sisters

2. What is Cellular Respiration?
TYPE 1:
Anaerobic
– No oxygen used to make ATP
TYPE 2:
Aerobic
- Oxygen used to make ATP

3. C6H12O6 + O2  H2O + CO2 + ATP Chemical Formula:
Glucose Oxygen Water Carbon Dioxide Energy

4. Occurs in the Cytoplasm
Aerobic Respiration
STEP 1: GLYCOLYSIS
“Glucose Splitting” - A molecule of Glucose is split into 2 pyruvate molecules.
2 ATP are produced
Occurs in the Cytoplasm

5. STEP 2: Kreb’s Cycle (Citric Acid Cycle)
A series of chemical reactions where CO2 is produced.
2 ATP are produced
Occurs in the Mitochondria

6. STEP 3: ELECTRON TRANSPORT CHAIN
Electrons from Steps 1 & 2 move down a chain towards a molecule of Oxygen and form water molecules.
Oxygen = Final Electron Acceptor
32-34 ATP are produced
Occurs in the Mitochondria

7. The Big Picture

9. Summary 36 ATP produced per glucose molecule
2 in Glycolysis
2 in Kreb’s Cycle
32-34 via Electron Transport Chain
Carbon Dioxide and Water are waste products of cellular respiration.
Oxygen = Final Electron Acceptor

10. TYPE 1: Anaerobic Respiration
Fermentation
Cellular Respiration without the use of oxygen.
Occurs in the cytoplasm
Why?
To make ATP for metabolic reactions.
To continue glycolysis (no oxygen needed)

11. Type 1: Lactic Acid fermentation
Performed by: Animals & Bacteria
Step 1: Glycolysis
Glucose  Pyruvate
Step 2:
Pyruvate Lactic Acid
Lactic Acid builds up in muscle cells  causes sore and weak muscles
Waste product

12. Type 2: Alcoholic Fermentation
Performed by: Yeast & Bacteria
Step 1: Glycolysis
Glucose  Pyruvate
Step 2:
Pyruvate  Ethanol + CO2
Ethanol = Type of Alcohol
Ethanol & CO2 are waste products
Used to make bread, beer, & wine