Question

multiple choice 2 points
what molecule is needed for the myosin heads to detach from the actin binding site?
phosphorus
potassium
tropimysosin
atp

Explanation:

Muscle contraction involves myosin and actin interaction. When ATP binds to the myosin head, it causes a conformational change that allows the myosin head to detach from the actin binding site. Phosphorus and potassium are elements not directly involved in this detachment mechanism. Tropomyosin is a protein that regulates the availability of actin binding sites but is not the molecule for detachment. ATP is the energy - carrying molecule crucial for this process.

Answer:

ATP