What is the Source of Chemical Energy Used to Power

Question

What is the source of chemical energy used to power a muscle cell in your arm?
A) pyruvic acid
B) adenosine triphosphate (ATP)
C) nicotinamide adenine dinucleotide (NAD⁺)
D) phospholipids

Accepted Answer

Adenosine triphosphate (ATP) is the primary source of chemical energy used to power muscle cells. ATP is created through cellular respiration and provides the energy needed for muscle contraction.