Serotonin is derived from tryptophan.
a. true
b. false

a. True

Explanation:

All processes mediated by two biological components as fascinating as wonderful: tryptophan and serotonin. Moreover, both are closely related, because without an adequate level of tryptophan, serotonin synthesis would not be possible.

The impact of this amino acid (tryptophan) and this neurotransmitter (serotonin) on our mood, health and cognition are evident.

Serotonin, also called the happiness molecule, is derived from tryptophan and produced almost mostly by enterochromaffins, incredible cells that inhabit our intestinal mucosa.

cardiovascular system

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significant amounts of nitrogen oxides, carbon monoxide, and other pollution

explanation:

passenger vehicles are a major pollution contributor, producing significant amounts of nitrogen oxides, carbon monoxide, and other pollution. in 2013, transportation contributed more than half of the carbon monoxide and nitrogen oxides, and almost a quarter of the hydrocarbons emitted into our air.