Yeast is used in wine and beer industries because

Yeast is used in wine and beer industries because it respires

  1. aerobically producing oxygen
  2. aerobically producing alcohol
  3. anaerobically producing alcohol
  4. anaerobically producing CO2

Answer

Yeast is used in wine and beer industries because it respires anaerobically producing alcohol.

Glucose (No oxygen) → Alcohol + CO2 + Energy

The alcohol is used in wine and beer industry, while the CO2 is used in bread making.

The correct option is C.