Answer:
The blood vessel from lungs to heart is pulmonary vein which carries oxygenated blood.
Facilitated diffusion is the diffusion of solutes through transport proteins in the plasma membrane. Facilitated diffusion is a type of passive transport. Even though facilitated diffusion involves transport proteins, it is still passive transport because the solute is moving down the concentration gradient.
As powerful as diffusion is, cells sometimes must move materials in the opposite direction—against a concentration difference. This is accomplished by a process known as active transport. As its name implies, active transport requires energy.
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Answer:
Cancer cells have nothing to stop them and they keep multiplying without a purpose with nothing to stop them
Explanation:
