Respiration
Aerobic and anaerobic respiration in cells
Cellular Respiration
Respiration is the process by which cells break down glucose to release energy. Aerobic respiration uses oxygen: glucose + oxygen -> carbon dioxide + water + energy. Anaerobic respiration occurs without oxygen and produces less energy.
Example
Comparing Aerobic and Anaerobic
Aerobic: occurs in mitochondria, produces lots of energy, needs oxygen. Example: your cells during normal activity. Anaerobic: occurs in cytoplasm, less energy, no oxygen needed. Example: muscles during intense sprinting (lactic acid) or yeast fermentation (alcohol + CO2).
Note
Key Point
Do not confuse respiration with breathing. Breathing is moving air in and out of the lungs. Respiration is the chemical process inside cells that releases energy from glucose.
Key Vocabulary
RespirationThe chemical process in cells that breaks down glucose to release energy
AerobicA process that requires oxygen
AnaerobicA process that does not require oxygen
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Respiration
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