Answer:
The functional unit of a muscle cell is known as a "sarcomere" which covers the distance between the two Z-lines.
The sarcomere consists of A-zone which contains both thick and thin filaments, H-zone which contains only thick filaments and I band which contains only thin filaments.
During muscle contraction, thick and thin myofibrils slide over each other due to which the distance between two z-line get reduced.
The H and I zone gets shortened but A zone does not shorten but come close to other A- bands and disappears.
Parents, genetic material is only ever passed through reproduction.
Answer:
October 21
Explanation:
It takes about a month to have another full moon appear.
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Answer:
<u>Autotrophs</u> are organisms, such as plants, that can make their own food.
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