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Hello.
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So these are the four common molecules that can be found or biological molecules that can be found among living organisms.
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So first we have carbohydrates.
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Basically, it's made of monosaccharides.
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And the other molecule or biological molecule, we have proteins.
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Proteins are made of amino acids.
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The third one, we have here.
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Lipids.
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Okay, lipids are made of, for example, we have fat, okay, as an example of lipids, it's made of glycerol and fatty acids.
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And the fourth one, we have the nucleic acid...