Final answer:
Transporter and channel proteins are not enzymes. They assist in moving molecules across cell membranes but do not catalyze chemical reactions like enzymes do.
Step-by-step explanation:
Neither transporter nor channel proteins belong to the category of enzymes. Enzymes are a distinct category of proteins which act as biological catalysts to speed up chemical reactions within the cell. Whereas transporter proteins, including carrier proteins, facilitate the movement of molecules across the cell membrane through changes in their shape. Channel proteins provide pathways for molecules to travel through the membrane via a hydrophilic channel. Although channels and transporters are crucial for cellular function, they do not catalyze reactions and therefore are not enzymes.