If a protein has to get through a membrane, it has to be unfolded and threaded through, like thread through the eye of a needle. The enzymes that assist in this process and make sure that the protein refolds correctly after passing through the membrane are called _____.

3000+ review questions on anatomy and physiology. 

Anatomy refers to the internal and external structures of the body and their physical relationships, whereas physiology refers to the study of the functions of those structures.