Which one of the following is NOT applicable for a chemical synapse?
Which one of the following is NOT applicable for a chemical synapse?
Select an option to attempt
Correct Answer: Option C
Explanation
Chemical synapses and signal modulation:Chemical synapses CAN modulate signal intensity through multiple mechanisms:• Amount of neurotransmitter released (vesicle fusion frequency, quantal content)• Number of postsynaptic receptors (receptor upregulation/downregulation)• Receptor sensitivity (phosphorylation state, desensitisation)• Temporal summation (multiple signals within a short period)• Spatial summation (signals from multiple synapses)• Neuromodulators (dopamine, serotonin) can modulate the efficacy of synaptic transmissionThe INCORRECT statement would be: 'Chemical synapses cannot modulate signal intensity' — this is FALSE. Chemical synapses are actually superior to electrical synapses in their ability to modulate, amplify, or dampen signals.Answer: The statement 'chemical synapses cannot modulate signal intensity' is INCORRECT.