Side with lower concentration of moleculesSide with lower concentration of molecules Side with higher concentration of moleculesSide with higher concentration of molecules Plasma membranePlasma membrane Facilitated diffusion causes a net movement of molecules down their concentration gradient. Facilitated diffusion causes a net movement of molecules down their concentration gradient. Transport protein

cellular respiration oxidizes food into energy in the form of atps.

glycolysis (6 c hexose) > 2x atps are used > 6c hexose biphosphate > 2 x 3c triphosphate >

2 x 3c pyruvate (2x nadh produced from nad) and (4x atp produced)

pyruvate actively pumped mitochondrial matrix.

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b tumor cells have a cell wall instead of a membrane

explanation:

tumor cells different from normal cells because tumor cells have a cell wall instead of a membrane.