Which of the following is NOT a key reason for eukaryotic cells to N -glycosylate proteins? To make them more soluble. To protect them from damage or degradation. All of the other answers are reasons to N -glycosylate proteins Sugars resulting from N -glycosylation can be modified in the Golgi apparatus and used as a signal to direct proteins to other organelless such as the lywosome. Some N -glycosylated proteins can become part of the glycocalyx (carbohydrate layer).