Question

biochemical reactions rely on the activity of specific enzymes. consider the decomposition or hydrolysis of sucrose, a common disaccharide. match the terms with the correct letter labels within the model of the hydrolysis of sucrose.

terms: substrate/reactant, enzyme-substrate complex, active site, enzyme, product(s)

letter labels: a, b, c, d, e, f

Explanation:

To solve this, we analyze the enzyme - substrate interaction in sucrose hydrolysis:

1. Substrate/reactant: Sucrose (A) is the reactant as it's the molecule being broken down.
2. Enzyme - substrate complex: When the enzyme (B) binds to sucrose (A), the complex (D) is formed.
3. Active site: The part of the enzyme (B) where the substrate binds is the active site (C).
4. Enzyme: The catalyst (B) that facilitates the reaction without being consumed.
5. Product(s): After hydrolysis, sucrose breaks into glucose and fructose (E).
6. Remaining enzyme: After the reaction, the enzyme (F) is free to act again.

Answer:

• A: Substrate/reactant (sucrose)
• B: Enzyme (sucrase)
• C: Active site (of sucrase)
• D: Enzyme - substrate complex (sucrase - sucrose complex)
• E: Product(s) (glucose and fructose)
• F: Enzyme (sucrase, free after reaction)