How can we compare the luminosity of the glostick in the different temperatures of water similar to a star's luminosity or absolute brightness on the HR diagram?

Neurotransmitters are messengers responsible for communication between neurons. they are released from synaptic vesicles and are received by receptors.  the communication is referred to as neurotransmission. the following statement is true about neurotransmitters: a. they're stored in synaptic vesicles in the axon.