Question

1. directions

drag and drop the correct answer choice to each answer blank. or touch the answer choice followed by the answer blank.
complete the statement below using the correct terms.
activation energy reaction substrate enzyme
a chemical reaction can be sped up when our bodies use a substance called a(n). these help lower the needed to start the.

Explanation:

Enzymes are biological catalysts that speed up chemical reactions in the body by lowering the activation energy required for the reaction to start. The substance on which an enzyme acts is called the substrate.

Answer:

A chemical reaction can be sped up when our bodies use a substance called a(n) enzyme. These help lower the activation energy needed to start the reaction.