models and simulations are useful because they allow us to study phenomena that are otherwise too small, too far away, or too complicated to observe. few models can replicate the actual phenomenon perfectly, however. Identify and explain one limitation of "Beyond the Black Hole"

The blue particles in this image are able to cross the cell membrane through simple diffusion. how will they be transported? outside the cell inside the cell o a. the substances will move directly across the membrane from outside the cell to inside the cell. b. the substances will move through channels in the membrane proteins from outside the cell to inside the cell. o c. the substances will move through channels in the membrane proteins from inside the cell to outside the cell. o d. the substances will move directly across the membrane from inside the cell to outside the cell.