Carotenoids are

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Multiple Choice

Carotenoids are

Explanation:
Carotenoids are lipid-soluble pigments. Their molecules are long, nonpolar chains built from isoprene units, which makes them hydrophobic and soluble in organic solvents rather than water. This lipid nature fits them with other lipids, and in cells they reside in lipid membranes, contributing to pigment roles and protection against oxidative damage. They are not carbohydrates, nucleic acids, or proteins, which are built from sugars, nucleotides, and amino acids respectively.

Carotenoids are lipid-soluble pigments. Their molecules are long, nonpolar chains built from isoprene units, which makes them hydrophobic and soluble in organic solvents rather than water. This lipid nature fits them with other lipids, and in cells they reside in lipid membranes, contributing to pigment roles and protection against oxidative damage. They are not carbohydrates, nucleic acids, or proteins, which are built from sugars, nucleotides, and amino acids respectively.

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