Question

what are light and dark bands?
Explain in simplest form.
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Answer 1

Answer:

light bands are made of actin filaments and dark bands are made of meromyosin filaments which is helpful in contraction of muscle

Answer 2

The arrangement of the thick myosin filaments across the myofibrils and the cell causes them to refract light and produce a dark band known as the A Band. In between the A bands is a light area where there are no thick myofilaments, only thin actin filaments. These are called the I Bands.

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