What is the difference between passive and active transport? And

What is the difference between simple and facilitated diffusion?

Active transport requires chemical energy because it is the movement of biochemicals from areas of lower concentration to areas of higher concentration. On the other hand, passive transport moves biochemicals from areas of high concentration to areas of low concentration; so it does not require energy.

Simple diffusion is the movement of molecules through a cell membrane without using the channels formed by integral membrane protein. Facilitated diffusion is the movement of molecules through those channels.

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.

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