Which of the following would be an example of diffusion occurring in the cells of the human body? Q1. The exocytosis of a large protein out of the cell. Q2. A white blood cell engulfing a bacteria cell. Q3. Oxygen molecules moving from oxygen rich air in the lungs to the red blood cells. Q4. The movement of sodium up its concentration gradient in a nerve cell.

Describe the change in phase and temperature as water moves from the oceans to the atmosphere and then returns to earth again as rain. a) evaporation : temperature increases; condensation : temperature decreases; precipitation (rain) : temperature decreases b) evaporation : temperature increases; condensation : temperature decreases; precipitation (rain) : temperature increases c) evaporation : temperature decreases; condensation : temperature decreases; precipitation (rain) : temperature decreases d) evaporation : temperature increases; condensation : temperature increases; precipitation (rain) : temperature decreases