Which of the following body systems has the main function of sending signals from one part of the body to other parts of the body? I. excretory system II. reproductive system III. nervous system IV. immune system A. I only B. I and II only C. III only D. I, II, and III only

C. III only

Explanation:

the answer is c.

by: nicholas dooley

hi my name is ashlynn and im 15

these macromolecules could either be amino acids, proteins or nucleic acids. they are responsible for the chemical changes and reactions that affects largely the cell and its composition. take for instance the cytoplasm of the cell where these organelles are settled. these simple organelles are composed of macromolecules which ignites and catalyses different functions that enables cells, in macro-perspective in motion and metabolism. in intestines for example, metabolism happens and breaking down parts of a food to simpler compounds that are used and these nutrients delivered throughout the body and again broken down by into smaller components.