How does each of the listed molecules cross the cell membranes water fructose oxygen carbon dioxide

Water moves through cell membrane via osmosis, diffusion (from high concentration to low concentration), or via special protein channels called aquaporins.

Fructose as a sugar molecule (glucose also) goes through the membrane via protein channels such as GLUT1.  

Oxygen and carbon dioxide move across cell membranes via simple diffusion, a process that requires no energy input. The movement occurs down the gradient, from the higher to lower concentration.

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