Let's analyze the given data to determine the best conclusion.
We have three types of energy storage in the human body: Free Glucose in Blood, Glycogen, and Lipids (Fats). Here are the details:
1. Free Glucose in Blood
- Kcal per Gram: 4 kcal
- Total Energy Storage: 40 kcal
- Life Support Time: Few minutes
2. Glycogen
- Kcal per Gram: 4 kcal
- Total Energy Storage: 600-1600 kcal
- Life Support Time: 1 day
3. Lipids (Fats)
- Kcal per Gram: 9 kcal
- Total Energy Storage: 100,000 kcal
- Life Support Time: Approximately 30-40 days
Now let's analyze and verify the given conclusions:
1. Blood is a primary location for energy storage:
- From the data, the total energy storage in the blood is only 40 kcal. Therefore, blood is not a primary location for energy storage compared to glycogen and lipids.
2. Fat molecules contain more energy-containing bonds than simple sugars:
- Lipids (fats) have 9 kcal per gram.
- Both types of simple sugars mentioned (Free Glucose in Blood and Glycogen) have 4 kcal per gram.
- Hence, fat molecules contain more energy per gram (9 kcal) than simple sugars (4 kcal).
3. A gram of glycogen has twice as much energy as a gram of fat:
- Glycogen: 4 kcal per gram
- Lipids (Fats): 9 kcal per gram
- This statement is incorrect as a gram of glycogen has less energy than a gram of fat, not twice as much.
4. The human body stores approximately 1,000 kcal of glucose:
- From the data, the total energy storage ranges provided are:
- Free Glucose in Blood: 40 kcal
- Glycogen: 600-1600 kcal
- So, adding these, the human body might store up to approximately 1640 kcal of glucose, but it does not specify that it stores exactly around 1,000 kcal.
Based on this analysis, the best conclusion is the second one:
Fat molecules contain more energy-containing bonds than simple sugars.
