NEET Zoology Muscle Contraction MCQ Question
If a sarcomere in a muscle fibre shortens from 2.5 micrometers to 2.0 micrometers during contraction, by what percentage has the sarcomere length decreased?
20%
25%
15%
10%
Correct Answer
Detailed Explanation
The decrease in length is 0.5 micrometers. The percentage decrease is (0.5/2.5) * 100 = 20%. The NCERT context describes the sarcomere as the functional unit of contraction.
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