Sugar crosses the cell membrane from an area of high concentration to an area of low concentration using
special proteins embedded in the membrane.

Discuss the functions of epithelial connective nerviud and muscular tissues

What percentage of light hits earth's surface directly?

Asap many people try to eliminate fat from their diets which is one reason it is necessary for humans to eat fat a) fat is the only way to get energy b) every cell in the body must contain fat c)fat stores less energy than polysaccharides d) saturated fats make blood vessels healthier