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Cellular Respiration.

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Presentation on theme: "Cellular Respiration."— Presentation transcript:

1 Cellular Respiration

2 Cellular Respiration Cellular Respiration is almost the exact opposite process of photosynthesis. The reaction for Cellular Respiration follows: C6H12O6 + H2O → 6CO2 + 6H2O Energy

3 Stages of Cellular Respiration
Stage 1: Glycolysis Stage 2: Aerobic Respiration

4 Glycolysis Anaerobic Process – does not require oxygen
Glucose is broken down in the cytoplasm Two molecules of ATP and NADH are formed for each glucose molecule broken down

5 Glycolysis (continued)
The NADH are converted into Pyruvate molecules Why is the net gain two ATP molecules instead of four in the process?

6 Aerobic Respiration There are two parts of Aerobic Respiration:
Kreb Cycle Electron Transport

7 Kreb Cycle Pyruvate reacts with oxygen to give off energy and form carbon dioxide Also known as the citric acid cycle

8 Electron Transport Where most ATP is produced
High energy electrons and hydrogen ions from the Kreb cycle are used to convert ADP to ATP What is different for cellular respiration in prokaryotics?

9 Anaerobic Respiration
Respiration in the absence of oxygen Fermentation – glycolysis in the absence of oxygen Lactic Acid Fermentation Alcohol Fermentation

10 Lactic Acid Fermentation
Enzymes convert pyruvate into lactic acid Occurs in human cells Used by microorganisms that produce foods (cheese, yogurt, sour cream)

11 Alcohol Fermentation Pyruvate converted to ethyl alcohol and carbon dioxide Occurs in yeast and some bacteria

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