Before mitosis begins, a cell makes a copy of the dna in the nucleus. what term is used to describe this process of making and exact copy of the dna?

Dna is always read in the whereas rna is read in .

The oxidizing agent our bodies use to obtain energy from food is oxygen (from the air). if you breathe 15 times a minute (at rest), taking in and exhaling 0.5 l of air with each breath, what volume of air do you breathe each day? air is 21% oxygen by volume. what volume of oxygen do you breathe each day?

20 the compound al(nh3)2 has atoms of nitrogen.