Biochemical evidence supporting our current model of muscle contraction includes the observation that

A) myosin binds calcium.
B) titin binds calcium.
C) actin has ATPase activity.
D) myosin has ATPase activity.
E) actin and myosin have the same molecular weight.


D) myosin has ATPase activity.

Biology & Microbiology

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During phase I of AIDS, opportunistic infections appear.

a. true b. false

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