This is a procedure that is performed not in a living organism but in a controlled environment, like a test tube or petri dish.

In vitro

In vitro is a procedure that is performed not in a living organism but in a controlled environment, like a test tube or Petri dish.

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.

she will be charged $6

step-by-step explanation:

48 dollars divided by 200 beads equals .24 dollars a bead

.24 multiplied by 25 more beads equals 6 dollars as the total cost