If All Animal Cells-Both Embryonic and Adult-Suddenly Possessed Cell Walls

If all animal cells-both embryonic and adult-suddenly possessed cell walls, which of the following processes would be negatively affected?

A) the movement of materials through the intestines
B) the ability of animals to move their limbs (i.e., muscle contraction)
C) the development of the gastrula during embryogenesis
D) the ability of animal hearts to pump blood
E) All of these choices are correct.