This type of molecule is the most common energy source for all cells and enter the cells by facilitated diffusion.The molecule is

Biology · High School · Wed Jan 13 2021

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Correct answer is glucose. 

Glucose is a primary energy source for most cells and an important substrate for many biochemical reactions. As glucose is a need of each and every cell of the body, so are the glucose transporters. Consequently, all cells express these important proteins on their surface. 

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