In the autonomic nervous system, neurotransmitter activation of its receptor terminates when the neurotransmitter is metabolized by enzymes in the extracellular fluid, or when it diffuses away. which other mechanism leads to termination of neurotransmitter activity?

what have scientists found to be the most efficient and effective way to insert new sequences into an individual? a-scientists have created genetically altered foods that release dna during digestion. b-scientists use viruses to insert specific gene sequences. c-scientists irradiate genes so that they can be absorbed through the skin.

the electromagnetic energy from the sun arrives in the form of visible and invisible light.