Which of the following is an example of facilitated
diffusion?
A. liquid molecules colliding with one
another
B. reaching an equal amount of molecules on
both side of a membrane
C. red blood cells allowing glucose to move in
and out
D. cytoplasm keeping an organelle in place

Select the correct answer. which statement applies only to the axial skeleton, not the appendicular skeleton? a. it contains a pivot joint. b. it has muscles attached that work in pairs. c. it contains red bone marrow. d. it possesses fossa for bone articulation. e. it protects the heart and lungs.