When a Neuron Responds to a Particular Neurotransmitter by Opening

question 1

Multiple Choice

When a neuron responds to a particular neurotransmitter by opening gated ion channels, the neurotransmitter is serving as which part of the signal pathway?

• A) relay molecule
• B) transducer
• C) signal molecule
• D) response molecule

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Definitions:

Ribosomes

Cellular structures where protein synthesis occurs, reading mRNA to assemble amino acids into polypeptide chains.

Nucleotides

The basic building blocks of DNA and RNA, consisting of a nitrogenous base, a sugar molecule, and a phosphate group.

DNA

Deoxyribonucleic acid, a molecule that carries the genetic instructions for the development and functioning of living organisms.

Posttranslational

Refers to the chemical modifications and processes occurring to a protein after it has been synthesized by ribosomes.