Questions and Answers
What is the definition of cellular respiration?
C6H12O6 + 6O2 → 6CO2 + 6H2O + Energy (as ATP)
Glycolysis produces ______ ATP, ______ NADH, and ______ pyruvate.
2, 2, 2
In the pre-Krebs cycle, the inputs include ______ pyruvate and ______ NAD.
2, 2
What are the outputs of the Krebs cycle?
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What are the inputs for the electron transport chain?
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Study Notes
Cellular Respiration Overview
- Cellular respiration is a biochemical process converting glucose (C6H12O6) and oxygen (O2) into carbon dioxide (CO2), water (H2O), and ATP (energy).
- Overall reaction: C6H12O6 + 6O2 → 6CO2 + 6H2O + Energy (ATP).
Glycolysis
- Glycolysis occurs in the cytoplasm and initiates the breakdown of glucose.
- Inputs include 2 ATP molecules and one glucose molecule.
- Outputs consist of 2 ATP (net gain), 2 NADH (electron carriers), and 2 pyruvate molecules.
- This stage is anaerobic, not requiring oxygen.
Pre-Krebs Cycle (Pyruvate Oxidation)
- Takes place in the mitochondria, transforming pyruvate into Acetyl CoA.
- Inputs include 2 pyruvate molecules and 2 NAD.
- Outputs are 2 molecules of CO2, 2 Acetyl CoA, and 2 NADH.
- The process links glycolysis to the Krebs cycle.
Krebs Cycle (Citric Acid Cycle)
- Occurs in the mitochondrial matrix, further oxidizing Acetyl CoA.
- Inputs involve 2 FAD, 6 NAD, 2 Acetyl CoA, and 2 ADP.
- Outputs entail 2 ATP, 4 CO2, 6 NADH, and 2 FADH2.
- This cycle plays a critical role in energy production and releases high-energy electrons.
Electron Transport Chain (ETC)
- Located in the inner mitochondrial membrane, it utilizes electrons from NADH and FADH2.
- Inputs include 10 NADH, 2 FADH2, 6 O2, and 32 ADP.
- Outputs yield 6 H2O, 2 FAD, 10 NAD, and a substantial 32 ATP.
- The ETC is the final stage of cellular respiration and is highly efficient in ATP production.
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Description
Test your knowledge of cellular respiration with these flashcards! Learn about the inputs and outputs of each stage, including glycolysis, the pre-Krebs cycle, and the Krebs cycle. Perfect for biology students looking to deepen their understanding of metabolic processes.
