Which from the presented substances contain N-acethylneuraminic acid? Bbibepure opuH orBer: Glycoproteins Chromoproteins Metalloproteins Phosphoproteins Lipoproteins

N-acetylneuraminic acid (Neu5Gc) is a component of glycoproteins. Glycoproteins are proteins that have carbohydrates (sugars) attached to them. N-acetylneuraminic acid is a type of sugar that is commonly found on the surface of cells and is involved in cell-cell recognition and adhesion. Therefore, the correct answer is Glycoproteins.