What is a substance that provides the host immunity by introducing a weakened (attenuated ) or killed (inactive ) version of a virus?

-bleach
-lytic virus
-antiviral drug
-vaccine

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