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Questions and Answers
Troponin I regulates Ca2+ release to initiate contraction
Troponin I regulates Ca2+ release to initiate contraction
False (B)
The crossbridge cycle is explained by the Sliding Filament Theory
The crossbridge cycle is explained by the Sliding Filament Theory
True (A)
Troponin C regulates Ca2+ release to initiate relaxation
Troponin C regulates Ca2+ release to initiate relaxation
False (B)
The crossbridge cycle is initiated by the binding of Ca2+ to Troponin I
The crossbridge cycle is initiated by the binding of Ca2+ to Troponin I
During diastole, ATP binds to myosin, which can interact with actin
During diastole, ATP binds to myosin, which can interact with actin
The power stroke is created by the bending of the actin filament
The power stroke is created by the bending of the actin filament
Troponin T moves tropomyosin to release its inhibitory effect on contraction
Troponin T moves tropomyosin to release its inhibitory effect on contraction
ATP is hydrolyzed before the myosin head attaches to actin
ATP is hydrolyzed before the myosin head attaches to actin
The crossbridge cycle consists of only three steps
The crossbridge cycle consists of only three steps
Upon Ca2+ stimulation, the troponin complex blocks tropomyosin
Upon Ca2+ stimulation, the troponin complex blocks tropomyosin