Lab_Assessment_Bioethanol Production

Which of the following is the primary substrate for bioethanol production using yeast?

• Glucose

• Sucrose

• Starch

• Galactose

What is the byproduct of bioethanol fermentation using sucrose and yeast?

• Oxygen

• Methane

• Carbon Dioxide

• Nitrogen

The fermentation of sucrose by yeast primarily produces which of the following?

• Lactic Acid

• Butanol

• Glucose

• Ethanol

What is the chemical equation for the fermentation of sucrose to ethanol and carbon dioxide?

• C₆H₁₂O₆ + H₂O → 4 C₂H₅OH + 4 CO₂

• C₁₂H₂₂O₁₁ + H₂O → 4 C₂H₅OH + 4 CO₂

• C₆H₁₂O₆ + H₂O → 2 C₂H₅OH + 4 CO₂

• C₁₂H₂₂O₁₁ + H₂O → 2 C₂H₆O + 2 CO₂

Why is sucrose considered a good substrate for bioethanol production compared to starch?

• Sucrose has a higher ethanol yield than starch.

• Sucrose does not require enzymes for fermentation.

• Sucrose is easier to hydrolyze than starch.

• Sucrose produces more carbon dioxide than starch.