[First Review of Proteins]

9. Which of the following is not a function of proteins in organisms?

A) Protein hormones carry messages through the blood from one site in the body to another?

B) Collagen is a protein that strengthens bone, tendons and skin.

C) Proteins are a good source of long term energy storage. (Hint: They contain very little energy!)

D) Some proteins like myosin can contract, and are thus a key moving part of muscles.

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