Question
Which is the primary source of energy for most cells in the body? A sugar B fat C protein D vitamin
Answer
4.4
(256 Votes)
Xerxes
Master · Tutor for 5 years
Answer
A. Sugar
Explanation
The primary source of energy for most cells in the body is glucose, a type of sugar. This is because glucose is easily and quickly metabolized by cells to produce ATP (adenosine triphosphate), which is the primary molecule used by cells for energy. While fats and proteins can also be used as energy sources, they are not as readily accessible as glucose.