
29-07-2005, 10:15
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חבר מתאריך: 26.10.01
הודעות: 1,886
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דחוס יותר
Muscle weighs more than fat because muscle cells that compose muscle are
denser than fat cells. Why is this? Because fat cell cytoplasm contains
mostly oils (lipids), whereas muscle cell cytoplasm contains mostly
contractile proteins (myosin and actin) suspended in an aqueous (watery)
environment. Lipids in general are less dense than water. You can prove
this by mixing salad oil with water in a bottle and shaking it.
Eventually, the oil will separate from the water and float to the top to
form a lighter layer floating on top of the water. This lowered density of
lipids make fatty tissue less heavy than muscle.
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