No, starch is not a protein; it is a carbohydrate. Starch is a polysaccharide made up of numerous glucose units linked together. It serves as a major energy storage form in plants, providing a source of energy when consumed by humans and animals.
On the other hand, proteins are made up of amino acids and play crucial roles in building and repairing tissues, producing enzymes and hormones, and supporting immune function. While starch and proteins are both essential nutrients in our diet, they belong to different categories and serve different functions in the body.