Anaerobic Respiration & Fermentation

Question 1

Anaerobic respiration

Answer 1

• Similar to aerobic respiration, except O2 is replaced by another molecule such as sulphate, methane or nitrate

Question 2

Why is anaerobic respiration less efficient than aerobic respiration?

Answer 2

These molecules are weaker oxidizing agents than O2

Question 3

Fermentation

Answer 3

• Uses substrate-level phosphorylation instead of an electron transport chain to generate ATP
• Recycles NADH to NAD+ via electron transfer to pyruvate

Question 4

What are the 2 types of fermentation?

Answer 4

• Alcohol Fermentation
• Lactic Acid Fermentation