A test organism develops a genetic mutation that causes neurons to develop without synaptic knobs. How will this impact neuronal function?
A)Signal transduction down the axon will be interrupted, so the signal will not "jump" the synapse and reach the postsynaptic neuron.
B)The dendrites of the postsynaptic neurons will have no means to attach to presynaptic axons.
C)No neurotransmitters will be released into the synapse to signal the postsynaptic neuron, as the synaptic knob is where they are stored.
D)Action potentials will not travel down the axon nearly as rapidly.

Question

Quizplus · Accepted Answer

The synaptic knob is where neurotransmitters are stored and released to signal the postsynaptic neuron. Without the synaptic knob, there would be no means to release neurotransmitters, thus interrupting neuronal function.

A Test Organism Develops a Genetic Mutation That Causes Neurons