Describe the effect of ph 7 on the activity of enzymes

It depends on what enzymes we are talking about. Enzymes in your stomach work well in high acidity. A pH of 7 is in the middle or basic and acidic. So, some enzymes may not work, because the pH conditions are what they are wired for. So the activity will probably slow down.

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.