The centrosome is: A. a region of the chromosome where microtubules attach to chromosomes during mitosis.
B. the microtubule organizing center for the mitotic spindle.
C. a region of the chromosome where sister chromatids are attached to each other.
D. a region of the chromosome where kinetochores attach.

Which of the following is a difference between active transport and facilitated diffusion? view available hint(s)which of the following is a difference between active transport and facilitated diffusion? facilitated diffusion can move solutes against a concentration gradient, and active transport cannot.active transport involves transport proteins, and facilitated diffusion does not.facilitated diffusion involves transport proteins, and active transport does not.active transport requires the expenditure of cellular energy, and facilitated diffusion does not.