Question

1. chemical reactions and enzymes - match the following term to the correct definition: (5 points) activation energy a. the substances changed during a chemical reaction. b. the amount of energy that needs to be absorbed for a chemical reaction to start. catalyst c. substances made by a chemical reaction. d. a specific reactant that binds with an enzyme. reactant e. a substance that decreases the activation energy needed to start a chemical reaction, and, as a result, increases the rate of the chemical reaction. product substrate

Explanation:

• Activation Energy: Defined as energy to start reaction (matches b).
• Catalyst: Substance lowering activation energy (matches e).
• Reactant: Substances changed in reaction (matches a).
• Product: Substances made by reaction (matches c).
• Substrate: Specific reactant binding to enzyme (matches d).

Answer:

• Activation Energy: b. The amount of energy that needs to be absorbed for a chemical reaction to start.
• Catalyst: e. A substance that decreases the activation energy needed to start a chemical reaction, and, as a result, increases the rate of the chemical reaction.
• Reactant: a. The substances changed during a chemical reaction.
• Product: c. Substances made by a chemical reaction.
• Substrate: d. A specific reactant that binds with an enzyme.