Which of the following provides the best description of active transport of materials across the cell membrane? Active transport does not require energy and moves materials from areas of relatively higher to lower concentration. Active transport does not require energy and moves materials from areas of relatively lower to higher concentration. Active transport requires energy and moves materials from areas of relatively lower to higher concentration. Active transport requires energy and moves materials from areas of relatively higher to lower concentration.

creative diagnostics is a professional biological commercial company,specializing inassisting clients with t cell differentiationstudies.

answer: 21

step-by-step explanation:

divide 630 by 30. 30 goes into 630 21 times

the "power" of a lens is its resolution power, or its ability to distinguish between to closely located points. with the low power lens, it is likely you will see the rough form of the hay and maybe some movement of dots around the hay. however, when observed with the high power lens, the detailed features of the hay become visible and the microbes being grown are more clearly visible.

i hope this you