Which of the following is not characteristic of facilitated diffusion? A It moves substances against a concentration gradient. B It requires a carrier protein. C It involves a change in the shape of its carrier. D It requires no energy input.

the correct answer is A

Explanation:

faclitated diffusion takes place down the concentration gradient

prophase: we can observe the chromosomes to coil up and condense. they become visible. nuclear membrane and envelope disintigrate.s

metaphase: chromosomes align at the center, the metaphase plate. spindle fibers attach to centromeres of the sister chromatids. they meet at kinetochores.

anaphase: sister chromatids are pulled towards each opposing centromere, set on different poles.

telophase: chromosomes are now clustered up only on either sides of the cell. nuclear membranes reform, and a new cell wall forms along the cell plate. this will lead to cytokinesis, the process that divides the cell membrane and forms the cell wall.