The Carbohydrate sets are covalently attached to various variant proteins to form glycoproteins. Carbohydrates are a shorter percentage of the weight of glycoproteins than of proteoglycans.
Several glycoproteins are elements of cell membranes, where they play several of roles in procedure such as cell adhesion and the binding of sperm to eggs. The carbohydrate is an organic compound which having only of oxygen, hydrogen, and carbon mainly with a hydrogen oxygen atom ratio of 2:1 as in water; in other words with the empirical formula that is Cm H2O n. Some exceptions exist for instance deoxyribose is a component of DNA has the empirical formula C5H10O4. The Carbohydrates are not technically hydrates of carbon. It is more precise structurally to view them as polyhydroxy ketones and aldehydes.