<span>Slow twitch muscle fibers. They help enable long endurance, which would be useful for marathon length running.
Skeletal muscle fiber is encircled by a plasma membrane called the sarcolemma, which holds sarcoplasm, the cytoplasm of muscle cells. It gives the cell its striated appearance.</span>
True
False
True
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True
I think these are right
Eat healthy, get sufficient sleep, exercises, get sun.
I believe the correct answer is A , but I am not 100% sure , hope I helped (: