You can eat starch but can't digest cellulose
Large organic molecules that are composed of many subunits are known as polymers<span>. Examples of polymers that occur in the human body are proteins, which have amino acids as subunits and polysaccharides (like starch) which have monosaccharides (such as glucose) as repeat units.</span>
Biology encompasses diverse fields, including botany, conservation, ecology, evolution, genetics, marine biology, medicine, microbiology, molecular biology, physiology, and zoology.
Protozoans, bacteria, fungi... viruses are not organisms
