Question

1. which enzyme is used to help bacteria, yeast, and other microorganisms break down chemical substances through fermentation?

cellulases
oxidoreductases
proteases
lyases

Explanation:

• Cellulases: These enzymes break down cellulose, not directly involved in general fermentation breakdown of chemical substances.
• Oxidoreductases: Play a crucial role in redox reactions which are part of fermentation processes where microorganisms break down substances.
• Proteases: Act on proteins, not the main enzymes for general fermentation - related breakdown of various chemical substances.
• Lyases: Catalyze the breaking of bonds other than hydrolysis and oxidation, not the key enzymes for the described fermentation - based breakdown.

Answer:

oxidoreductases