A child is diagnosed with retinoblastoma in which there are three tumors 4, 5, and 7 disk diameters behind the equator. Using the Reese-Ellsworth staging classification, which describes the staging and prognosis for this condition?

Do the following statements describe actin, myosin, both of the proteins or neither of the proteins? (a) contains a binding site for calcium (b) found in the i band (c) exists in a globular (g) form and a filamentous (f) form (d) contains a binding site for atp (e) is a component of the thin filament (f) is a component of the thick filament