Are parts of the nervous system that sense changes in the body's internal or external environment. a) dendrites b) mitochondria c) receptors d) axons

Dendrites are projections of the nerve cell that receive signals from other nerves cells.

Mitochondria is an organelle that produces adenosine triophosphate (ATP).

Receptors are organs or cells that are able to respond to light, heat, or other external factors.

Axon is a part of the nerve cell where impulses are produced.

I believe the answer would be receptors..

Pro insulin undergoes extensive posttranslational modification along the production pathway .

It feels feed the echo system