Question

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

Answer 1

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.