1. How does respiration work??

2. Define: CELLULAR RESPIRATION ANAEROBIC RESPIRATION AEROBIC RESPRIATION
ANAEROBE
AEROBE

3. Has no respiratory system!

4. Cell Energy Energy is essential for life
Active transport, cell division, flagella movement, protein production
Some capture energy from light or chemicals
Autotrophs
Others eat those that capture energy
heterotrophs

5. So Where Is Energy Found?
Energy is stored in chemical bonds of ATP
Adenosine Triphosphate (ATP)
Adenosine molecule with three phosphate groups
Energy carrier molecule of the cell

6. Question…?
How do you release the energy stored in the bonds?

7. Answer
Break the bond!

8. Energy is Stored in the BOND!

9. Forming and Breaking Down ATP
Adenosine monophosphate (AMP)
Adenosine diphosphate (ADP)
Adenosine triphosphate (ATP)
ATP  ADP + P + Energy
Energy + P + ADP  ATP

10. What is Cellular Respiration?
The release of chemical energy for use by cells.
Once the energy that was in sunlight is changed into chemical energy by photosynthesis, an organism has to transform the chemical energy into a a form that can be used by the organism.
This process is cellular respiration.

11. Describe Cellular Respiration
1. The breakdown of glucose molecules to release energy
2. Takes place in all living things
3. Is a step by step process

12. What is the chemical equation for cellular respiration?

13. EQUATION FOR RESPIRATION
CARBON DIOXIDE
ATP
GLUCOSE
C6H12O6 +
6O2
6CO2 +
6H2O +
ENERGY
OXYGEN
WATER

14. Cellular Respiration
Process by which mitochondria break down food molecules to produce ATP
Three Stages
Glycolysis – Anaerobic
Citric Acid Cycle – Aerobic
Electron Transport Chain - Aerobic

15. Glycolysis Net gain = 2 ATP
Glucose gets broken into two three carbon pyruvic acids
2 ATP used to start this reaction
Reaction produces 4 ATP
Net gain = 2 ATP
NAD+ = electron carrier = NADH when it accepts two electrons

16. Pyruvic molecules move into Mitochondria
IF OXYGEN IS PRESENT then the Citric Acid cycle takes place
Pyruvic acid loses one carbon (CO2)
Combines with Coenzyme A to create Acetyl-CoA

17. Citric Acid Cycle (Krebs)

18. Electron Transport Chain

19. Fermentation Net Gain = 2 ATP
Times when there is not enough oxygen to do Citric Acid Cycle
Net Gain = 2 ATP
Two major types
Lactic Acid
Alcoholic

20. Respiration CYTOPLASM GLYCOLOSIS HAPPENS HERE! CO2 IS RELEASED
PROTEINS
CARBO’S
(SUGARS)
FATS
(LIPIDS)
GLUCOSE
C6H12O6
AMINO
ACIDS
MAKES
2 ATPS
GLYCOLOSIS
IN CYTOPLASM
NO OXYGEN!
ATP TOTALS
GLYCOLOSIS=2
RESPIRATION=34
BOTH=36!
PYRUVIC
ACID
CO2 IS RELEASED
ACETYL-CoA
O2 ENTERS HERE
KREBS CYCLE
AND
ELECTRON
TANSPORT
MAKES
34 ATPS
MITOCHONDRIA RESPIRATION HAPPENS IN THIS ORGANELLE!

21. The End