Starch molecules are pretty much same because Starch is a polysaccharide consists of single repeating units of glucose monomers joined in α-1,4 linkage.
Whereas, protein are made up of 20 different amino acids that can be arranged in many different combinations that results into protein folding into its 3D structure that determine its activity.
About starch and protein :
Starch and protein both are macromolecules that provides energy but both have different structure and composition.
The building block of proteins are amino acids and glucose is the building block of starch.
Starch found in simplest linear form is- amylose, and branched form -amylopectin.
To learn more about macromolecules;https://brainly.com/question/19596068
