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Question
In voluntary muscle movement, which of the following process occurs only if ATP is present?
In voluntary muscle movement, which of the following process occurs only if ATP is present?
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Solution
The correct option is B Myosin becoming separated from actin
The contraction of voluntary muscles requires a nervous impulse which is transferred from the neuron to the sarcolemma of the muscle cell. As impulse travels through the sarcoplasmic reticulum, the calcium is diffused into the myofilaments filling and exposing the actin binding sites. ATP is a critical factor that helps to prepare Myosin for binding as well as for recharging the myosin. The binding of ATP to a myosin head detaches myosin from actin. Thus, the correct answer is option B.
The contraction of voluntary muscles requires a nervous impulse which is transferred from the neuron to the sarcolemma of the muscle cell. As impulse travels through the sarcoplasmic reticulum, the calcium is diffused into the myofilaments filling and exposing the actin binding sites. ATP is a critical factor that helps to prepare Myosin for binding as well as for recharging the myosin. The binding of ATP to a myosin head detaches myosin from actin.
Thus, the correct answer is option B.
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