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Flashcards on Cellular Respiration: ATP and Energy Production
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What is the main purpose of cellular respiration?
To produce ATP and energy for the cell.
What is ATP?
Adenosine Triphosphate; a molecule used as a source of energy in cells.
Which organelle is responsible for cellular respiration?
Mitochondria
What are the three main stages of cellular respiration?
Glycolysis, Krebs cycle, and Electron transport chain.
Where does glycolysis occur?
Cytoplasm
What is produced during glycolysis?
2 ATP, 2 NADH, and 2 pyruvate molecules
Which stage of cellular respiration produces the most ATP?
Electron transport chain
What is the final electron acceptor in the electron transport chain?
Oxygen
What is the net ATP production from one molecule of glucose in cellular respiration?
36-38 ATP
What is the purpose of fermentation in cellular respiration?
To regenerate NAD+ so that glycolysis can continue in the absence of oxygen.
Where does the Krebs cycle occur?
Mitochondrial matrix
What is produced during the Krebs cycle?
2 ATP, 6 NADH, 2 FADH2, and carbon dioxide
How is ATP formed during cellular respiration?
Through the process of oxidative phosphorylation in the electron transport chain.
What is the overall equation for cellular respiration?
Glucose + Oxygen -> Carbon dioxide + Water + ATP
What is the purpose of oxygen in cellular respiration?
To serve as the final electron acceptor in the electron transport chain.
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Test Your Knowledge
Which molecule is used as a source of energy in cells?
Glucose
ATP
DNA
RNA
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Where does glycolysis occur?
Nucleus
Cytoplasm
Mitochondria
Cell membrane
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What is the main purpose of cellular respiration?
To produce ATP and energy for the cell
To break down proteins
To store glucose
To produce oxygen
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What is the final electron acceptor in the electron transport chain?
Carbon dioxide
Oxygen
Water
ATP
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What is the net ATP production from one molecule of glucose in cellular respiration?
2-4 ATP
10-12 ATP
36-38 ATP
50-60 ATP
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Which organelle is responsible for cellular respiration?
Nucleus
Cell membrane
Mitochondria
Endoplasmic reticulum
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What is the purpose of fermentation in cellular respiration?
To produce ATP
To break down glucose
To release carbon dioxide
To regenerate NAD+ so that glycolysis can continue in the absence of oxygen
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Where does the Krebs cycle occur?
Nucleus
Cytoplasm
Mitochondrial matrix
Cell membrane
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What is produced during glycolysis?
2 ATP, 2 NADH, and 2 pyruvate molecules
4 ATP, 6 NADH, and 2 FADH2
6 ATP and carbon dioxide
2 ATP, 2 carbon dioxide, and 2 water molecules
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What is the purpose of oxygen in cellular respiration?
To produce glucose
To store energy
To break down ATP
To serve as the final electron acceptor in the electron transport chain
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