1. Proteins
2. Enzymes speed up chemical reactions by lowering the activation energy required for the reaction to occur.
3. The leftmost arrow (pointing up) represents the activation energy without an enzyme. The middle arrow (pointing down from the peak of the lower curve) represents the activation energy with an enzyme. The rightmost arrow (pointing down from the peak of the higher curve) represents the activation energy without an enzyme. The horizontal axis represents the reaction progress, and the vertical axis represents energy.
5. Step 1: Substrates bind to the active site of the enzyme, forming an enzyme-substrate complex. Step 2: The enzyme catalyzes the reaction, converting the substrates into products. Step 3: The products are released from the enzyme, which remains unchanged and can catalyze another reaction.
Parent Tip: Review the logic above to help your child master the concept of enzymes worksheet.