Question

1. what is the name of the protein group that can speed up reactions or reduce their activation energy? enzymes vitamins ions lipids

Explanation:

Enzymes are proteins that act as biological catalysts, speeding up chemical reactions and reducing the activation energy required for the reactions to occur. Vitamins are organic compounds that have various functions but are not proteins that catalyze reactions. Ions are charged particles and not proteins for catalysis. Lipids are a class of biomolecules with functions like energy - storage and membrane - formation, not catalytic proteins.

Answer:

A. enzymes