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Class 10 Science Medium Mcq English Medium

At the cellular level, muscle cells move by changing their shape mainly due to:

Question
At the cellular level, muscle cells move by changing their shape mainly due to:
Special proteins changing shape and arrangement in response to nervous impulses
An increase in cell number
Loss of water only
Chemical reactions with oxygen only
Answer
Special proteins changing shape and arrangement in response to nervous impulses
Detailed Explanation
Muscle cells contain special proteins that change their shape and arrangement in response to nervous electrical impulses, causing the muscle cell to shorten.
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