Aerobic & Anaerobic Respiration

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