MDCAT Biology MCQ #977

For a muscle contraction to occur, ATP must provide immediate energy. What is the chemical mechanism for this energy release?

MDCAT Biology MCQ #977

  1. Question 1

    Q1. For a muscle contraction to occur, ATP must provide immediate energy. What is the chemical mechanism for this energy release?

    • A) Condensation of ADP and inorganic phosphate
    • B) Oxidation of the ribose sugar ring
    • C) Hydrolytic cleavage of the terminal phosphate bond
    • D) Reduction of the adenine nitrogenous base

    Answer: Hydrolytic cleavage of the terminal phosphate bond

    Explanation: ATP releases energy when the terminal phosphate bond is broken by water (hydrolysis), yielding ADP and inorganic phosphate.