Question

this video shows carbon dioxide crossing the cell membrane by simple diffusion. complete the paragraph. at the start of the video, the concentration of carbon dioxide molecules outside the cell is ▲ than inside the cell. by simple diffusion, carbon dioxide molecules cross the higher ane in ▼. ▼ molecules move from outside the cell lower e. eventually, the concentration outside the cell is ▼ the concentration inside the cell. overall, the video shows that carbon dioxide has a net movement ▼ its concentration gradient.

Explanation:

Simple diffusion is the movement of molecules from an area of higher concentration to an area of lower concentration. In the video, carbon - dioxide moves by simple diffusion. At first, there are fewer CO₂ molecules outside the cell compared to inside, so the outside concentration is lower. Molecules move from outside to inside. Eventually, equilibrium is reached where concentrations are equal. Diffusion occurs down the concentration gradient.

Answer:

lower; carbon dioxide; into the cell; equal to; down