This colored pigment is known as Hemoglobin. Hemoglobin is contained in the red blood cells of vertebrates and gives these cells their red color.
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Plasma Membrane is like all other cellular membranes, the plasma membrane consists of both lipids and proteins. The lipid bilayer (or phospholipid bilayer) is a thin polar membrane made of two layers of lipid molecules
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I don't know if this is what you are asking, but water weighs 70% of a cell.
