need some biology assistance

A.  Explain the differences between a proton and a protein. Write your answer as a paragraph. (3 pts)

B.  Select a food item from your pantry, cupboard, or fridge. Using the nutrition label and critical thinking, identify the organic molecules (macromolecules) that are found in the food.  Make sure you include all organic molecules (what organic molecule is always in food but is never on the nutrition label).  Describe the monomers that make up each organic molecule.  Describe the bonds that hold together these monomers.  Describe what will happen to the monomers after you have digested the macromolecules; explain how your cells use those monomers.  Write your answer as one or more paragraphs. (7 pts)

  Minimum 300 words

Example

Brown rice contains carbohydrates (34g), proteins (3g), lipids (1.5g), and nucleic acids (not listed). The main carbohydrate in brown rice is a polysaccharide, starch

(Note from Dr. H - this isn't listed, but I found this from an internet search; there are 34 g of carbohydrates, only 2g of fiber and 0g of sugars, so what carbohydrate is it? - use critical thinking)

. Starch is a polymer of glucose molecules, which is the monomer form. The glucose molecules are held together by covalent bonds. The starch will be digested into glucose, which can be metabolized to generate ATP in cells. There are a polypeptides found in brown rice, which are polymers of amino acids held together by peptide bonds. The rice polypeptides will be digested into amino acids, which can be used by cells to make new human proteins. Brown rice also contains triglycerides

(critical thinking & internet search)

, which are composed of a glycerol backbone and fatty acids. These monomers are held together by covalent bonds. The fatty acids and glycerol backbone will be reassembled into triglycerides for long term energy storage or they can be metabolized to generate ATP in cells. While this is not listed in the ingredients or nutrition information, there is DNA, a nucleic acid, in brown rice

(Note from Dr. H - all living cells contain DNA, all food is composed of living cells or formerly living cells)

.  DNA is composed of nucleotides, adenine, thymine, cytosine, and guanine, which are the monomers of nucleic acids. These nucleotides are held together by covalent bonds and hydrogen bonds. The nucleotides will be digested as monosaccharides, and the body will use them to generate ATP.