The energy of muscle contraction is most directly obtained from____________.
A
Phosphocreatine
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B
ATP
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C
Anaerobic respiration
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D
Aerobic respiration
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Solution
The correct option is C ATP
Answer :
i) The contraction of skeletal muscles is an energy-requiring process.
ii) To perform the mechanical work of contraction, actin and myosin utilize the chemical energy of the molecule Adenosine triphosphate (ATP).
iii) Adenosine triphosphate (ATP) is a complex organic chemical that provides energy to drive many processes in living cells, e.g. muscle contraction, nerve impulse propagation, and chemical synthesis.
iv) Found in all forms of life, ATP is often referred to as the "molecular unit of currency" of intracellular energy transfer.