What sorts of signals does the brain use to communicate sensations, thoughts and actions?

In which case would a scientist choose to use a dissecting microscope rather than a compound microscope

This is the amino acid cysteine. circle the amine group, put a box aroundthe carboxylic acid group and use a different colored pencil/pen to circle the sidechain (r group). h o | ||nh2— c- c-oh | ch2 | sh

Which phase of the cell cycle ensures that identical copies of the dna are made for daughter cells?