Which one of these is not an example using facilitated diffusion?
aquaporins facilitate the diffusion of water in the kidney tubules of many
mammals.
a carrier protein moves sucrose across the membrane with the
concentration gradient.
using the sodium-potassium pump involves the hydrolysis of atp and the
release of nat to the outside of the cell.
ca+2 moves from high cytoplasmic concentration to low concentration
inside the cell using a membrane-spanning protein.

C. "Using the sodium-potassium pump involves the hydrolysis of ATP and the

release of Nat to the outside of the cell."

Explanation:

The use of a sodium-potassium pump is a form of active transport, not diffusion. It also requires energy because the pump moves ions against their concentration gradient (low to high), unlike diffusion.

Cytoplasm and organelles

Explanation:

Normally, a cell cannot attain a size greater than 20 microns due to the limits imposed by the size inter-relationships of its components. For example, there is a relationship between the amount of nuclear material and the size of a cell; this limits cells to a size where there is an optimal proportion of nuclear material to the rest of the cell.

Hope this helps :) and can I please get a/p>