Animation Quiz 43.3 Synaptic Transmission

Which statement about a chemical synapse is true?

Signal transmission occurs by diffusion of a compound called a neurotransmitter through the intercellular space between neurons.

What must be present at the postsynaptic site within a chemical synapse for the signal to be transmitted?

Membrane receptors that bind neurotransmitter molecules.

A biologist exposes mice to mutagenizing X-Rays to generate an array of different mutants. He hopes to generate a mutant form of acetylcholinesterase that will be functional at normal body temperature but inactive at a higher temperature. Which step would work as an initial screening step in the biologist’s quest to eventually identify a mutant of this type?

Look for mice with normal muscle contraction-relaxation activity at normal body temperature that develop continuous muscle contraction during an induced fever.

Refer to the table. Arrange the numbered events listed in the table in order of their occurrence during a chemical synaptic transmission.

5,1,4,2,3