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The table shows the energy stored in three types of organic molecules.

Energy Storage in Humans

\begin{tabular}{|c|c|c|c|}
\hline & Kcal per Gram & Energy Storage (Kcal) & Life Support Time \\
\hline \begin{tabular}{l}
Free Glucose \\
in Blood
\end{tabular} & 4 & 40 & Few minutes \\
\hline Glycogen & 4 & [tex]$600-1500$[/tex] & 1 day \\
\hline Lipids (Fats) & 9 & 100,000 & [tex]$30-40$[/tex] days \\
\hline
\end{tabular}

What is the best conclusion based on this data?

A. Blood is a primary location for energy storage.
B. Fat molecules contain more energy-containing bonds than simple sugars.
C. A gram of glycogen has twice as much energy as a gram of fat.

Sagot :

GinnyAnswer
To analyze the data provided in the table and determine the best conclusion, let's review and compare the information for each type of organic molecule:

1. Free Glucose in Blood:
- Keal per Gram: 4
- Energy Storage (Ikcel): 40
- Life Support Time: Few minutes

2. Glycogen:
- Keal per Gram: 4
- Energy Storage (Ikcel): 600-1500
- Life Support Time: 1 day

3. Lipids (Fats):
- Keal per Gram: 9
- Energy Storage (Ikcel): 100,000
- Life Support Time: 30-40 days

Now, let's evaluate each given possible conclusion:

1. Blood is a primary location for energy storage:
- This statement is not supported by the data. Free glucose, which is present in the blood, has a relatively small energy storage capacity (40 Ikcel) and can only support life for a few minutes. This suggests that blood is not the primary location for long-term energy storage.

2. Fat molecules contain more energy-containing bonds than simple sugars:
- This statement is supported by the data. Lipids (fats) have a higher energy content per gram (9 Keal per gram) compared to free glucose and glycogen (both 4 Keal per gram). Additionally, lipids have a significantly higher total energy storage capacity (100,000 Ikcel) and can support life for 30-40 days. This indicates that fats are able to store much more energy per gram than simple sugars.

3. A gram of glycogen has twice as much energy as a gram of fat:
- This statement is incorrect. The data shows that glycogen and free glucose both provide 4 Keal per gram, whereas fats provide 9 Keal per gram. Therefore, a gram of fat has more than twice the energy of a gram of glycogen.

Based on the data and the analysis, the best conclusion is:

Fat molecules contain more energy-containing bonds than simple sugars.

This conclusion reflects the fact that fats have a higher energy content per gram and greater total energy storage capacity, making them a much more efficient source of long-term energy storage in the body.
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