Question

question 4 of 10
a higher concentration of carbon dioxide exists inside a leaf cell than outside the cell. in order to maintain homeostasis, which action will occur?
a. the cell membrane will use active transport to move the carbon dioxide to an area of lower concentration.
b. the cell membrane will allow carbon dioxide to pass out of the cell by diffusion.
c. a portion of the cell membrane will wrap around the carbon dioxide molecules to enclose them within the cell.
d. the cell membrane will burst open to allow more carbon dioxide into the cell.

Explanation:

Diffusion is the movement of substances from an area of higher concentration to an area of lower concentration. Carbon - dioxide can pass through the cell membrane by diffusion. Since there is a higher concentration of carbon - dioxide inside the leaf cell, it will move out of the cell by diffusion to maintain homeostasis. Active transport is for moving substances against the concentration gradient and requires energy. Wrapping the cell membrane around carbon - dioxide (endocytosis) is not relevant here as carbon - dioxide is a small molecule that diffuses. Bursting the cell membrane is not a normal or homeostatic process.

Answer:

B. The cell membrane will allow carbon dioxide to pass out of the cell by diffusion.