Verifying Statements on Fermentation and Oxidation

Steps:

• Recall glucose fermentation equation: C₆H₁₂O₆ → 2 CH₃CH₂OH + 2 CO₂, confirming one glucose yields two ethanol molecules.
• Analyze statement 1: It correctly states two ethanol molecules per glucose in fermentation.
• Examine statement 2: Ethanol oxidation to ethanoic acid is CH₃CH₂OH → CH₃COOH, where ethanol loses hydrogen/electrons.
• Confirm roles: In redox, the oxidized substance (ethanol) acts as reducing agent by donating electrons.

Why A is correct:

• Both statements align with standard biochemistry: fermentation stoichiometry and redox definitions in organic oxidation.

Why the others are wrong:

• B: Statement 2 is true per redox principles.
• C: Statement 1 is true per fermentation equation.
• D: Both statements hold via established chemical reactions.

Final answer: A