Active transport can involve the transport of ions requires the cell to expend energy

Active transport requires energy to be spent in order to move substances across the cell membrane

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.

C. gemstones they are the only non metallic mineral from the list.