Question

energy storage in humans
what is the best conclusion based on this data?
blood is a primary location for energy storage.
fat molecules contain more energy - containing bonds than simple sugars.
a gram of glycogen has twice as much energy as a gram of fat.
the human body stores approximately 1,000 kcal of glucose.

Explanation:

Lipids (fats) have 9 kcal per gram compared to 4 kcal per gram for glucose and glycogen. This higher energy per gram suggests more energy - containing bonds in fat molecules. Blood has only 40 kcal of free glucose (not a primary energy storage). A gram of fat has more energy than a gram of glycogen (9 vs 4 kcal). The body stores 40 kcal of free glucose (not 1000 kcal).

Answer:

B. Fal molecules contain more energy - containing bonds than simple sugars.