Energy Storage in Humans A 4-column table with 3 rows. Column 1 is unlabeled with entries Free Glucose in Blood, Glycogen, Lipids (Fats). Column 2 is labeled K cal per Gram with entries 4, 4, 9. Column 3 is labeled Energy Storage (k cal) with entries 40, 600 to 1600, 10,000. Column 4 is labeled Life Support Time with entries Few minutes, 1 day, 30 to 40 days.

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.