Which statement about the sliding filament theory is incorrect?

Practice question

Question

Which statement about the sliding filament theory is incorrect?

Options

Choose one · Correct answer highlighted

Actin filaments slide over myosin filaments. ATP is required for muscle contraction. Calcium ions are not involved in contraction. Correct Myosin heads form cross-bridges with actin filaments.

Explanation

Calcium ions are essential for muscle contraction as they help in cross-bridge formation.

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