Question

what is the name of the group of proteins that can reduce the activation energy and speed up chemical reactions for metabolic reactions in the cell?
proteins
carbohydrates
enzymes
substrates

Explanation:

Enzymes are proteins that act as biological catalysts. They lower the activation - energy of metabolic reactions in the cell, speeding up these chemical reactions. Proteins in general do not all have this catalytic property. Carbohydrates are energy - providing molecules and structural components, not catalysts. Substrates are the substances that enzymes act upon.

Answer:

C. enzymes