An oncologist would like to know if a support group would help her patient feel more satisfied

i would have to say autosomal

when atoms of different types of elements join together, they make molecules called compounds. water consists of compound molecules made up of 2 hydrogen atoms and 1 oxygen atom. this is why it's called h2o. water will always have 2 times the number of hydrogen atoms as oxygen atoms.

i believe it is "they are not used up by reactions" as the answer to your question, text me back if this is correct because i just learned this.

the cell cycle is the final answer! : )