An AMPA receptor is a binding site for _____ on postsynaptic neurons.Group of answer choicesGABAcalciumsodiumglutamateacetylcholine

The acetylcholine receptor at the neuromuscular junction would best be described as a(n)Group of answer choiceschannel-linked receptor.enzyme-linked receptor.G-protein-coupled receptor.nuclear receptor.gap junction.

The molecules that bind to receptors in a signalling pathway to initiate a signal are called:Group of answer choicesSecond messengersTranscription factorsSubstratesLigands

The neurotransmitter at the neuromuscular junction is _____________.Multiple Choiceacetylcholinecholinecalciumsodium

An excitatory neurotransmitter _____ the postsynaptic membrane.

Which ion mainly mediates the changes in postsynaptic membrane potential following activation of GABA-A receptors?  sodium   phosphate   chloride   calcium   potassium