Question

Breads and other whole grain foods are composed of very large polysaccharide molecules which contain hydrogen, oxygen, and which other element?

a. carbon
b. iron
c. nitrogen
d. water

Answer 1

Breads contain are composed of carbon, hydrogen, and oxygen. The carbon is what is used to classify it as a organic compound. Polysaccharides are composed of large chains of monosaccharides, but they all contain just those three elements.

Answer 2

Carbon molecules, ie C6H12O6 is a carbohydrate