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Questions and Answers
Which molecule is responsible for the re-sequestration of calcium back into the SR for relaxation to occur?
Which molecule is responsible for the re-sequestration of calcium back into the SR for relaxation to occur?
- Actin
- Tropomyosin
- ATP (correct)
- Myosin
What is the cause of rigor mortis, the muscular rigidity that accompanies death?
What is the cause of rigor mortis, the muscular rigidity that accompanies death?
- Tropomyosin recovery
- Enzymatic degradation
- High levels of calcium
- Lack of ATP (correct)
In skeletal muscle, which molecule does calcium bind to in order to regulate actin and myosin interaction?
In skeletal muscle, which molecule does calcium bind to in order to regulate actin and myosin interaction?
- Troponin C (correct)
- Calmodulin
- Tropomyosin
- ATP
Which molecule is responsible for recovering the binding sites in actin when calcium levels drop?
Which molecule is responsible for recovering the binding sites in actin when calcium levels drop?
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Which muscle type has calcium binding to calmodulin to regulate actin and/or myosin interaction?
Which muscle type has calcium binding to calmodulin to regulate actin and/or myosin interaction?
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What happens to actin and myosin when ATP is not available?
What happens to actin and myosin when ATP is not available?
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