Mono Di and Tri saccharides

Name the type of reaction that joins monosaccharides together. 1 

Name the monosaccharides of which sucrose is composed. 1 

Name the monosaccharides of which lactose is composed. 1 

Sucrase is an enzyme that hydrolyses sucrose during digestion. Name the products of this reaction. 1 

What term is used to describe the different structures of α-glucose and β-glucose? 1