A weightlifter experiences sudden muscle fatigue. Which nucleotide molecule provides the immediate chemical energy required for the contraction of their skeletal muscles?
Q1. A weightlifter experiences sudden muscle fatigue. Which nucleotide molecule provides the immediate chemical energy required for the contraction of their skeletal muscles?
Answer: Adenosine triphosphate
Explanation: ATP provides immediate energy for cross-bridge cycling. Creatine phosphate is tempting but it is a storage molecule, not the direct nucleotide used.