The oxygen of the air passes through the walls of the alveoli and the capillaries to the blood through the process of diffusion. (option C)
- A solution can be called hypertonic when it contains more dissolved particles than those found in normal cells.
- Osmosis is the process in which water diffuses through a semipermeable membrane from a less concentrated compartment to one with a higher concentration of solutes.
- Passive transport is a mechanism that moves particles from one side of a biological membrane to the other side without expending energy.