1. Cellular Respiration How is the Glucose used by living organisms??
..making ATP by breaking down sugars …

2. Cellular Respiration Overview

3. Cellular Respiration Why do cells need oxygen? What does Oxygen do ?
To breath
To convert sugar into Energy for growth, mitosis, metabolism, etc…
What does Oxygen do ?
Oxygen helps the body to release the energy that is stored in sugars
The energy that is released by breaking down sugars is ATP

4. Cellular Respiration
The process of using Oxygen to produce ATP by breaking down sugars is called Cellular Respiration.
Cellular Respiration makes most of the ATP that a cell needs.

5. Cellular Respiration Where does cellular Respiration take place?
Mitochondria
Both Animal & Plant cells have Mitochondria, they are the power house of the cell.

6. Cellular Respiration
The Mitochondria can not make ATP from food directly.
The food has to be broken down into Glucose molecules.

7. Cellular Respiration
Cellular Respiration is like a mirror image of photosynthesis……. same, but in reverse!!!

8. Cellular Respiration Overview:
Photosynthesis makes sugars & cellular respiration breaks it down.
Cellular Respiration occurs in 2 steps!!!
Inside the matrix, the fluid &
Inside the mitochondria membrane

9. Cellular Respiration Stage 1: Krebs Cycle
Takes place in the matrix, the fluid of the Mitochondria
Glucose enters the Krebs Cycle
The Krebs Cycle produces:
2 ATP - fuels the next step
6 CO2 – waste product

10. Cellular Respiration Stage 2: Electron Transport Chain
Takes place in the membrane of the Mitochondria
Oxygen enters the Electron Transport Chain
The Electron Transport Chain produces:
36 ATP – Energy for the organism
6 H2O – waste product

11. Cellular Respiration Total Energy molecules:
The Krebs Cycle produces 2 ATP
The Electron Transport Chain produces 36 ATP
That’s a total of 38 ATP (energy-rich) molecules for every 1 Glucose molecule that is broken down!!

12. Cellular Respiration Equation
Reactants:
C6H12O6
6 O2
Products:
6 CO2
6 H2O
38 ATP

14. Photosynthesis & Cellular Respiration
Where?
Chloroplast
Mitochondria
Reactants
CO2 & H2O
C6H12O6 & O2
Place of Non cyclic Reaction
Thylakoid membrane
Mitochondria membrane
Cycle of chemical Reactions
Calvin Cycle in stroma builds Glucose
Krebs cycle in matrix breaks down Glucose
Products