Take a moment to examine these images of cells and their surrounding membranes. You already know that the cell membrane protects the cell from the external environment and controls what substances enter and exit the cell. As you study the pictures, consider the following questions: Which of the two cells do you think is more efficient at transporting materials through the cell? Why?
The bigger cell would be more efficient at transporting because the surface area of the cell membrane is larger. This will allow cellular transport to occur at a faster rate, compared to the other cell.
