PhysiologyWeb Logo  Search

PhysiologyWeb Loading...

PhunnyPhysiology
Physiology Quiz -
Signaling Molecules - Part 2
The evolution of signaling molecules has made it possible for cells of multicellular organisms, such as humans, to communicate with one another in simple and complex ways. Signaling molecules may be used to transmit information between cells (extracellular or intercellular signaling), or they may be involved in signaling cascades inside cells (cytoplasmic or intracellular signaling). Test your basic knowledge of signaling molecules by taking this simple quiz.
(1)   Which of the following amino acids serves as a precursor or intermediary metabolite in the biosynthetic pathway of the neurotransmitter serotonin?
(2)   Which of the following amino acids serves as a precursor or intermediary metabolite in the biosynthetic pathway of the hormone melatonin?
(3)   Most vertebrate hormones are peptide hormones or derived from amino acids.
(4)   Many peptide hormones follow this biosynthetic pathway:
(5)   Which of the following amino acids serves as a precursor or intermediary metabolite in the biosynthetic pathway of the neurotransmitter/paracrine nitric oxide (NO)?
Checking your answers...
Checking your answers...

   



 






Posted: Tuesday, January 26, 2016