In the absence of a nerve connection or electrical stimulation, can a muscle cell be made to contract in a laboratory

setting? Explain your answer. What will be an ideal response?


ANSWER: Yes. The key event in causing a muscle to contract is increasing the cytoplasmic calcium
levels, as calcium is responsible for removing the tropomyosin from the binding sites on the
actin. Thus, by injecting calcium into the cells they could be made to contract.

Biology & Microbiology

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