Question

Why are fatty acids better than glycogen for storing large amounts of chemical energy?

a) Fatty acids have higher energy density
b) Glycogen is not involved in energy storage
c) Fatty acids are water-soluble
d) Glycogen has a higher energy yield per gram

Answer 1

Fatty acids are better for storing large amounts of chemical energy compared to glycogen because they have a higher energy density and do not absorb water, making them more efficient for long-term energy storage.

Step-by-step explanation:

Fatty acids are better than glycogen for storing large amounts of chemical energy for two main reasons:

• Fatty acids have higher energy density than glycogen, meaning they store more energy per unit mass. This is due to fats and oils being in a more reduced form, which releases more energy upon oxidation.
• Glycogen is hydrophilic and tends to absorb water, making it heavier. Since fats do not mix with water, they can be stored more compactly.

These characteristics make fatty acids a more efficient form of long-term energy storage compared to glycogen, which is better suited for short-term energy needs due to its more accessible but less energy-dense structure.