A(n) _____ is a substance that speeds up a chemical reaction but is not consumed or altered in the process.
A)hormone
B)amino acid
C)protein
D)catalyst

Question

A(n) _____ is a substance that speeds up a chemical reaction but is not consumed or altered in the process. 
A)hormone
B)amino acid
C)protein
D)catalyst

Quizplus · Accepted Answer

A catalyst is a substance that speeds up a chemical reaction without being consumed or altered in the process. Hormones, amino acids, and proteins can all participate in chemical reactions, but they are not catalysts.

A(n) _____ Is a Substance That Speeds Up a Chemical