Here is the answer to the MCAT practice test question – Which is not a characteristic of proteins?
Below are the answer and explanations to the question.
Which is not a characteristic of proteins?
- Can self-replicate
- Can act as a hormone
- Acts in cell membrane trafficking
- Can bind foreign materials
Proteins have numerous functions in the body; they can be hormones (chemical messengers), enzymes (catalyze chemical reactions), structural proteins (physical support), transport proteins (carriers of important materials), and antibodies (which bind foreign particles).
However, proteins cannot self-replicate; DNA is the only molecule capable of self-replication.