In the context of catalysis, how do enzymes assist in chemical reactions?

• A. Enzymes provide an alternative reaction pathway with lower $E\_a$ (activation energy).
• B. Enzymes change the equilibrium position of the reaction.
• C. Enzymes are consumed during the reaction and need to be replenished.
• D. Enzymes increase the $E\_a$ (activation energy) required for reactions.

Answer: (A)

Verified step by step guidance

1. Understand the role of enzymes in catalysis: Enzymes are biological catalysts that speed up chemical reactions without being consumed in the process.
2. Identify the effect of enzymes on activation energy: Enzymes provide an alternative reaction pathway with a lower activation energy, making it easier for the reaction to occur.
3. Clarify the misconception about equilibrium: Enzymes do not change the equilibrium position of a reaction; they only help the system reach equilibrium faster.
4. Address the consumption of enzymes: Enzymes are not consumed during the reaction; they remain unchanged and can be used repeatedly.
5. Consider the effect on activation energy: Enzymes decrease, not increase, the activation energy required for reactions, facilitating the reaction process.