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Aerobic respiration
Respiration that uses oxygen to release energy from glucose
Anaerobic respiration
Respiration without oxygen, releasing less energy
Glucose
Main fuel molecule broken down during respiration
Oxygen
Gas required for aerobic respiration
Carbon dioxide
Waste product of aerobic respiration
Water
Product of aerobic respiration
Lactic acid
Product of anaerobic respiration in animals
Ethanol
Product of anaerobic respiration in yeast
Energy
Released during both aerobic and anaerobic respiration
Oxygen debt
Extra oxygen needed to break down lactic acid after exercise
Mitochondria
Site of aerobic respiration in cells
What is the word equation for aerobic respiration?
Glucose + oxygen → carbon dioxide + water + energy
Does aerobic respiration release a lot or a little energy?
A lot
Where does aerobic respiration occur?
Mitochondria
What is the word equation for anaerobic respiration in animals?
Glucose → lactic acid + energy
What is the word equation for anaerobic respiration in yeast?
Glucose → ethanol + carbon dioxide + energy
Which type of respiration releases more energy?
Aerobic respiration
Why does anaerobic respiration release less energy?
Glucose is not fully broken down
What builds up in muscles during anaerobic respiration?
Lactic acid
What does lactic acid cause?
Muscle fatigue and cramp
What is oxygen debt?
Extra oxygen needed to remove lactic acid after exercise
Which organisms carry out anaerobic respiration to produce alcohol?
Yeast
What gas is produced by yeast during anaerobic respiration?
Carbon dioxide
Why do cells need energy?
For movement, growth, active transport, and maintaining temperature
Which type of respiration occurs during vigorous exercise when oxygen is limited?
Anaerobic respiration
Which type of respiration is used for long‑duration, lower‑intensity activity?
Aerobic respiration