Triglycerides contain more metabolic energy per unit weight than glycogen because:
(I)Glycogen has greater polarity than fatty acids.
(II)Fatty acids predominate in an anhydrous form
(III)Fatty acids are less oxidized than carbohydrates.
(IV)Triglycerides have a higher average molecular mass.
A)I,II,III,IV
B)I,II,III
C)I,II
D)II,III
E)III

Question

Quizplus · Accepted Answer

I, II, III. Glycogen is more polar and thus more hydrated, which contributes to its lower energy density compared to triglycerides. Fatty acids are stored in an anhydrous form within triglycerides, further increasing their energy density. Additionally, fatty acids are less oxidized than carbohydrates, meaning they contain more stored energy that can be released upon oxidation. The average molecular mass is not directly related to the energy content per unit weight.

Triglycerides Contain More Metabolic Energy Per Unit Weight Than Glycogen