You have discovered a novel hormone. Early experiments have shown that it is quite hydrophobic. Which of the following is likely to also be TRUE of these hormones?
A. They usually have very rapid effects on target cells.
B. They mostly bind to receptor proteins in the surface membrane of target cells.
C. They are highly soluble in blood plasma.
D. They are generally polar molecules.
E. Their mechanism of action generally involves altering protein synthesis.
Answer: E
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