Biology

The correct answer is: D.proteins, catalysts

Enzymes are proteins that act as catalysts. They speed up (catalyze) chemical reactions in the body without being consumed or permanently altered in the process. Enzymes are crucial for a variety of biological functions, including digestion, metabolism, and cellular processes.

Here’s a quick breakdown of the incorrect options:

A.amino acids, proteins: Amino acids are the building blocks of proteins, but they are not enzymes themselves. Proteins (made up of amino acids) can function...