Which statement about thick or thin myofi laments is CORRECT? A. Thick myofi laments contain the three proteins myosin, tropomyosin and troponin. B. Thin myofi laments contain the three proteins actin, tropomyosin and troponin. C. Thick myofi laments contain about 300 myosin molecules each of which has a binding site for a cross bridge. D. Thin myofi laments contain about 300 myosin molecules each of which has a cross bridge.
Option B. Thin myofi laments contain the three proteins actin, tropomyosin and troponin.
