During prolonged fasting (more than 48 hours), which of the following would show a dramatically increased concentration in the blood?
A) glucose
B) fatty acids
C) ketone bodies
D) lipoproteins
E) none of the above

Question

Quizplus · Accepted Answer

During prolonged fasting, the body starts breaking down stored fat for energy. This leads to an increase in the production of ketone bodies, which are water-soluble molecules produced in the liver from fatty acids. The concentration of ketone bodies in the blood can dramatically increase during prolonged fasting, leading to a state of ketosis. Therefore, option C, ketone bodies, would show a dramatically increased concentration in the blood during prolonged fasting.

During Prolonged Fasting (More Than 48 Hours), Which of the Following