Multiple choice

In case of skeletal muscle, which of the following represents its chemical composition?

There can be three types of muscles based on the structure of their fibres : 1) Striated/skeletal muscle 2) Smooth muscle 3) Cardiac muscle

  1. Water 20%, protein 20%, minerals and organic compounds 60%

  2. Water 75%, protein 20%, minerals and organic compounds 5%

  3. Water 10%, protein 20%, minerals and organic compounds 70%

  4. Water 30%, protein 10%, minerals and organic compounds 60%

  5. Water 20%, protein 30%, minerals and organic compounds 50%
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The correct composition is water 75%, protein 20%, minerals and organic compounds 5%. Minerals comprise of chiefly K+, Mg++, P+++, Na+ and Ca++. Organic compounds are present in form of glycogen, lipids, steroids and non-protein nitrogenous compounds.

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