A 2.0 cm cube (on all sides) has more surface area than an onion cell (about 0.01 cm on all sides). Explain why most cells are not 2 cm X 2 cm x 2 cm big even though they have more surface area.

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.

answerbacterium;

answerthe capacity to preform work;