Question 1
The inside of a resting cell is slightly negative relative to the outside. This is an example of
◦ chemical disequilibrium.
◦ osmotic equilibrium.
◦ electrical disequilibrium.
◦ failed homeostasis.
Question 2
Which property of diffusion best explains why a circulatory system is needed in multicellular organisms?
◦ Molecules move from an area of higher concentration to an area of lower concentration.
◦ Diffusion can take place in an open system or across a partition that separates two systems.
◦ Diffusion rate is inversely related to molecule size.
◦ Diffusion is rapid over short distances but much slower over long distances.