Which of the following statements about neurotransmitters is true? . a. they're stored in synaptic vesicles in the axon. b. the effect of acetylcholine on the heart muscles is excitatory. c. the peripheral nervous system has a wider variety of neurotransmitters than the central nervous system. d. most are produced in the cytoplasm of the dendrite and migrate to the axon.

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.

The answer is b. hope this !

Mitochondria is the cell organelle that produced the energy that is needed in the body system in form of atp, that is why it is called the power house of the cell. energy is needed by the living organisms to carry out the activities which sustain life.  if the mitochondria is destroyed atp will not be produced. if the mitochondria is destroyed, energy production will stop and the affected living organism will not have the energy to carry out the necessary life processes; this will lead to the death of the organism.