Respiration

Breaking Down the Definitions

1. Cellular Respiration2. Glycolysis3. Pyruvic Acid4. NADH5. Anaerobic6. Aerobic Respiration7. Fermentation8. Lactic Acid Fermentation

9. Alcoholic Fermentation10. Mitochondrial Matrix11. Krebs Cycle12. Oxaloacetic Acid13. Citric Acid

BrainPop Respiration

Chemical Equation of Cellular RespirationQuiz Next Meeting!

Cellular Respiration is the complex process in which cells make ATP by breaking down organic compounds

3 Stages of Cellular Respiration

Glycolysis Krebs Cycle

Electron Transport

Chain

Glycolysis

•Organic compounds are converted into 3-Carbon molecules of PYRUVIC Acid, making ATP and NADH (an electron carrier molecule).•Cash vs Check• In Cytoplasm•Anaerobic process•Produces 2 ATPs of Energy

Glycolysis

SugarsNew 6 Carbon

MoleculeG3P

New 3-Carbon

Molecule

Pyruvic Acid

Aerobic Respiration

Anaerobic Respiration

If No Oxygen Present the Pyruvic Acid…•Anaerobic Process• Fermentation•Pyruvic acid is converted into NAD and NADH,

creating Lactic Acid (muscle soreness, cramps, fatigue)• Some plants convert Pyruvic acid into ethyl alcohol

If Oxygen is present the Pyruvic Acid

•Continues into the KREBS Cycle•Also called Citric Acid Cycle•Occurs in the Mitochondria

Krebs Cycle• Pyruvates with the help on an enzyme, Acetyl CoA, combine

with Oxaloacetic acid to make Citric Acid and also releases CO2.• Citric Acid then release more CO2 and a Hydrogen atom to

create a 5 Carbon molecule and NADH• The new 5 Carbon molecule release more CO2 and another

Hydrogen atom to make a 4 Carbon molecule and NADH• The 4 Carbon molecule releases another H and also FAD• The 4 Carbon molecule releases another H and forms

Oxaloacetic Acid and the Krebs cycle continues

Krebs Cycle

Electron Transport Chain (ETC)

•All of the FADs and NADHs created in Krebs Cycle give there electrons to the ETC •ETC ultimately produces ATP, up to 34 molecules!

Efficiency of Cellular Respiration

•1 Molecule of Glucose yields•34 molecules of ATP from ETC•2 molecules of ATP from Glycolysis•2 molecules of ATP from Krebs cycle

Crash Course Video-Respiration