Yes, there is a type of sugar called lactose which is present in milk and milk products (except for those that are specially made without lactose for the benefit of those who have trouble digesting it).
Pizza is mainly a carbohydrate. Cheese on a pizza is a dairy product, and meat is a protein. Cheese will also be considered protein AND dairy.
Depends on the kind of cheese. They all vary in those components.
Given that cheese is a dairy product it is high in protein and also calcium. Unfortunately it is also high in saturated fat, being an animal product.
protein
Carbohydrate.
It is a carbohydrate.
Carbohydrate
Cheese is a refined carbohydrate
A membrane protein with a carbohydrate chain is called glycoprotein
No
No
It is a carbohydrate.