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ATP transports chemical energy within cells for metabolism. It is one of the end products of photophosphorylation, cellular respiration, and fermentation and used by enzymes and structural proteins in many cellular processes, including biosynthetic reactions, motility, and cell division.
different carrier proteins facilitate the diffusion of different molecules. how do carrier proteins move large molecules in and out of the cell. -first a large molecule attaches to a carrier protein in the membrane. -then the protein changes shape. -this releases the molecule on the opposite side of the membrane. what do channel proteins do in facilitated diffusion.