Aerobic Respiration (Leaving Cert Biology): Flashcards
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What is aerobic respiration?
What is aerobic respiration?
Enzyme-controlled release of energy from food using oxygen
Aerobic respiration equation (words)
Aerobic respiration equation (words)
Glucose + Oxygen → Carbon Dioxide + Water + ATP
Two stages of aerobic respiration
Two stages of aerobic respiration
- Glycolysis
- Krebs cycle & electron transport chain
Where does glycolysis occur?
Where does glycolysis occur?
Cytosol
Is glycolysis aerobic or anaerobic?
Is glycolysis aerobic or anaerobic?
Anaerobic (does not require oxygen)
ATP yield from glycolysis
ATP yield from glycolysis
2 ATP molecules per glucose
What is glucose broken down into during glycolysis?
What is glucose broken down into during glycolysis?
Two pyruvic acid molecules (3-carbon molecules)
Where does Stage 2 of aerobic respiration occur?
Where does Stage 2 of aerobic respiration occur?
Mitochondria
Does Stage 2 require oxygen?
Does Stage 2 require oxygen?
Yes, it is aerobic
What does pyruvic acid convert to in mitochondria?
What does pyruvic acid convert to in mitochondria?
Acetyl coenzyme A (acetyl CoA)
Function of cristae in mitochondria
Function of cristae in mitochondria
Increase surface area for more reactions & energy production
What are the breakdown products of the Krebs cycle?
What are the breakdown products of the Krebs cycle?
Carbon dioxide (CO₂) and water (H₂O)
What is the role of NADH?
What is the role of NADH?
Carries high-energy electrons to the electron transport chain
Final electron acceptor in electron transport chain
Final electron acceptor in electron transport chain
Oxygen
Three main products of aerobic respiration
Three main products of aerobic respiration
ATP, CO₂, H₂O