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Questions and Answers
Where does glycolysis take place?
Where does glycolysis take place?
What is the net gain of ATP molecules during glycolysis?
What is the net gain of ATP molecules during glycolysis?
What is the byproduct of the citric acid cycle?
What is the byproduct of the citric acid cycle?
Where does pyruvate oxidation take place?
Where does pyruvate oxidation take place?
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What is the total ATP yield from the complete breakdown of one glucose molecule?
What is the total ATP yield from the complete breakdown of one glucose molecule?
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What is the importance of cellular respiration?
What is the importance of cellular respiration?
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Study Notes
Cellular Respiration
Overview Cellular respiration is the process by which cells generate energy from glucose, releasing carbon dioxide and water as byproducts.
Stages of Cellular Respiration
-
Glycolysis
- Takes place in the cytoplasm
- Breaks down glucose into pyruvate, producing 2 ATP and 2 NADH
- Net gain of 2 ATP
-
Pyruvate Oxidation
- Takes place in the mitochondria
- Converts pyruvate into acetyl-CoA, producing 2 NADH and 2 FADH2
- No ATP produced
-
Citric Acid Cycle (Krebs Cycle)
- Takes place in the mitochondria
- Breaks down acetyl-CoA into carbon dioxide, producing 2 ATP, 6 NADH, and 2 FADH2
- Net gain of 2 ATP
-
Oxidative Phosphorylation
- Takes place in the mitochondria
- Uses energy from NADH and FADH2 to produce ATP through the electron transport chain
- Net gain of 32-34 ATP
Total ATP Yield 36-38 ATP molecules produced per glucose molecule
Importance of Cellular Respiration
- Provides energy for cellular activities
- Essential for life
Cellular Respiration
Overview
- Cellular respiration is the process of generating energy from glucose, producing carbon dioxide and water as byproducts.
Stages of Cellular Respiration
- Glycolysis: breaks down glucose into pyruvate, producing 2 ATP and 2 NADH in the cytoplasm, with a net gain of 2 ATP.
- Pyruvate Oxidation: converts pyruvate into acetyl-CoA, producing 2 NADH and 2 FADH2 in the mitochondria, with no ATP produced.
- Citric Acid Cycle (Krebs Cycle): breaks down acetyl-CoA into carbon dioxide, producing 2 ATP, 6 NADH, and 2 FADH2 in the mitochondria, with a net gain of 2 ATP.
- Oxidative Phosphorylation: uses energy from NADH and FADH2 to produce ATP through the electron transport chain in the mitochondria, with a net gain of 32-34 ATP.
ATP Yield
- 36-38 ATP molecules are produced per glucose molecule.
Importance of Cellular Respiration
- Provides energy for cellular activities.
- Is essential for life.
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Description
Understand the stages of cellular respiration, including glycolysis, pyruvate oxidation, and citric acid cycle. Learn how cells generate energy from glucose.
