Questions and Answers
What are the 4 cellular respiration steps?
Glycolysis, Pyruvate Oxidation, Citric Acid Cycle, Oxidative Phosphorylation.
What are the reactants of glycolysis?
1 glucose molecule, 4 ADP, 4 Pi, 2 NAD+
What are the products of glycolysis?
4 ATP (2 Net ATP), 2 NADH, 2 Pyruvate
What are the reactants of pyruvate oxidation?
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What are the products of pyruvate oxidation?
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What are the reactants of the citric acid cycle?
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What are the products of the citric acid cycle?
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What are the reactants of oxidative phosphorylation?
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What are the products of oxidative phosphorylation?
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What is the overall equation of cellular respiration?
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What is the overall balanced equation of cellular respiration?
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Study Notes
Cellular Respiration Steps
- Consists of four primary stages: Glycolysis, Pyruvate Oxidation, Citric Acid Cycle, and Oxidative Phosphorylation.
Glycolysis
- Reactants include 1 glucose molecule, 4 ADP, 4 inorganic phosphate (Pi), and 2 NAD+.
- Produces 4 ATP (with a net gain of 2 ATP), 2 NADH, and 2 pyruvate molecules.
Pyruvate Oxidation
- Reactants are 2 CoA-SH, 2 NAD+, and 2 pyruvate.
- Results in the formation of 2 NADH, 2 carbon dioxide (CO2), 2 hydrogen ions (H-), and 2 Acetyl CoA.
Citric Acid Cycle (Krebs Cycle)
- Uses 2 Acetyl CoA as reactants, converting them to 2 oxaloacetate.
- Produces 4 CO2, 6 NADH, 2 FADH2, and potentially 2 ATP or GTP.
Oxidative Phosphorylation
- Requires 6 NADH, 2 FADH2, 6 O2, and ADP + P as reactants.
- Generates 26-28 ATP and 4 water (H2O) molecules as products.
Overall Cellular Respiration Equation
- Simplified equation: Glucose + Oxygen → Carbon Dioxide + Water + Adenosine Triphosphate (ATP).
- Balanced chemical equation: C6H12O6 + 6O2 → 6CO2 + 6H2O.
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Description
Test your knowledge on the steps, reactants, and products of cellular respiration. This quiz covers important concepts such as glycolysis, pyruvate oxidation, and the citric acid cycle. Perfect for students studying biology or related fields.
