Answer:
They are necessary so they can be added to the carboxyl and amino function groups
Explanation:
Hope that helps
The two main tissues responsible for structural support are BONES AND CARTILAGES. Bone which is made up of collagen and calcium phosphate provides support and protection for body organs. Cartilage which is made up of closely packed collagenous fibers provides flexible support for some structures such as ear, nose and trachea.
Daily values found on food labels assist people in determining whether a food contains a little or a lot of a nutrients. Food labels are found on any packaged food giving a lowdown on everything from calories to cholesterol. It is important to learn how to read and understand food labels as this helps in making healthier choices.
