You have a friend who lost 7 kg (about 15 pounds)of fat on a regimen of strict diet and exercise. How did the fat leave her body?
A) It was released as CO₂ and H₂O.
B) It was converted to heat and then released.
C) It was converted to ATP, which weighs much less than fat.
D) It was broken down to amino acids and eliminated from the body.
E) It was converted to urine and eliminated from the body.

Question

Quizplus · Accepted Answer

Fat is made up of carbon, hydrogen, and oxygen atoms. When the body breaks down fat for energy, the carbon and hydrogen atoms are combined with oxygen atoms to form carbon dioxide (CO₂) and water (H₂O). These are then excreted from the body through breath, urine, and sweat. Therefore, option A is the correct answer.

You Have a Friend Who Lost 7 Kg (About 15