4. The kidney's functions are to filter and remove wastes from the blood which are harmful to the body. What might happen to the person whose kidneys fail to function? A. The kidneys will be damaged. B. The cells of the kidneys will be affected. C. There is no significant effect on the person. D. The person will suffer and need to undergo dialysis treatment.
5. James loves to eat junk food and enjoys adding fish sauce and soy sauce in his meals. One day, he was complaining of difficulty in urinating accompanied by severe pain in the side and back below his ribs. Which organ has a problem in this situation? A. heart B. kidney C. lung D. stomach​