what organic compound forms most of a cell's membrane, can store large amounts of energy, acts as a chemical messenger, and even serve as an insulator to conserve body heat​

lipids

Explanation:

Lipids are a family of organic compounds that are mostly insoluble in water. Composed of fats and oils, lipids are molecules that yield high energy and have a chemical composition mainly of carbon, hydrogen, and oxygen. Lipids perform three primary biological functions within the body: they serve as structural components of cell membranes, function as energy storehouses, and function as important signaling molecules.

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explanation:

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the second type of galaxy is called a barred spiral, which has a thing called a bar straddling the nucleus