Which of the Following Statements Regarding Neurotransmitters Is TRUE

question 20

Multiple Choice

Which of the following statements regarding neurotransmitters is TRUE?

• A)Acetylcholine is broken down by enzymes present on postsynaptic cell membranes.
• B)Acetylcholine that is released at synapses binds to adrenergic receptors in the postsynaptic cell membrane.
• C)Catecholamines are the most abundant neurotransmitters in the central nervous system.
• D)Opiate drugs,such as morphine,are antagonists of a class of neurotransmitters called endorphins.
• E)Gamma-aminobutyric acid (GABA)is a major excitatory transmitter in the central nervous system.

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Definitions:

Organic Products

Compounds predominately containing carbon and hydrogen, which may also include oxygen, nitrogen, and other elements, usually resulting from organic reactions.

Thermodynamic

The branch of physics that deals with the relationships and conversions between heat and other forms of energy.

Kinetic

Relating to or involving the motion of objects and the forces associated with them.

Resonance Structures

Different Lewis structures for the same molecule that depict possible distributions of electrons, illustrating delocalization within the molecule.