Which quality makes earth particularly well-suited to support life?
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a. it has a strong magnetic field.
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b. it rotates once per day.
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c. it has an elliptical orbit.
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d. its atmosphere contains trace amounts of methane.

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