Tissues of living organisms consist primarily of organic compounds; that is, they contain carbon molecules known as proteins, carbohydrates, and fats. a healthy human body is approximately 18% carbon by weight. determine how many pounds of carbon a body weighing 200 lbs contains. how many kilograms would that be? use 0.454 kg equals 1 lb in your conversion. a. 440 lb. of carbon; 16 kg of carbon b. 36 lb. of carbon; 79 kg of carbon c. 36 lb. of carbon; 16 kg of carbon d. 440 lb. of carbon; 79 kg of carbon