You Are Examining a Recently Captured Organism from Another Planet

Multiple Choice

You are examining a recently captured organism from another planet and are currently trying to deduce the types of neurotransmitters associated with the propagation of nerve impulses. You discover a very interesting neurotransmitter and find that, in spite of being alien, it is a derivative of the amino acid tyrosine. As a result, this novel neurotransmitter has to be classified as a(n)

A) neuropeptide.
B) serotinin analog.
C) GABA analog.
D) catecholamine.
E) acetylcholine analog.