Figure 7 shows two cubes. Cube X represents a bacterial cell. Cube Y represents a small
multicellular organism. A bacterial cell can
absorb all the nutrients it needs by diffusion
through its outer surface. Explain why a
multicellular organism cannot absorb all the
nutrients it needs by diffusion through its
outer surface. You must include calculations
in your answer. Use Figure 7.
Figure 7
Cube X
Cube Y
11 cm
0.0002 cm