What are the three beneficial functions of microbes in humans.

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

The backbone of the double helix has an alternating molecules. what do you call these alternating molecule?

Water diffusing through a semipermeable membrane is called