before mitosis begins a cell makes a copy of the dna in the nucleus. What term is used to describe this process of making an exact copy of the dna

many other transport proteins, often called pumps, move materials against a concentration gradient. active transport drives molecules across a membrane from a region of lower concentration to a region of higher concentration. this process, shown in figure 5.1, uses transport proteins powered by chemi- cal energy.

answer; blending inheritnace;