Biochemical Evidence Supporting the Sliding Filament Model of Muscle Contraction

question 33

Multiple Choice

Biochemical evidence supporting the sliding filament model of muscle contraction includes the observation that

• A)myosin light chains can be phosphorylated.
• B)titin connects each end of a thick filament to a Z line.
• C)TnC binds Ca2⁺.
• D)actin has polymerization ATPase activity.
• E)myosin has an ATP-dependent crossbridge cycle.

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Definitions:

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