How do small, uncharged molecules like oxygen and carbon dioxide move through the cell membrane?
A
simple diffusion
B
facilitated diffusion
C
channel proteins
D
endocytosis

the solute can move "downhill," from regions of higher to lower concentration, relying on the specificity of the protein carrier to pass through the membrane. this process is called passive transport or facilitated diffusion, and does not require energy.

photosynthesis makes the glucose that is used in cellular respiration to make atp. the glucose is then turned back into carbon dioxide, which is used in photosynthesis. while water is broken down to form oxygen during photosynthesis, in cellular respiration oxygen is combined with hydrogen to form water.

you can have just about every answer you can think of