Carbohydrates, Proteins, and Lipids.
Proteins monomers are amino acids; there are 20 different commonly known amino acids. Each protein is put together by different variations of the different amino acids. There polymers are polypeptides. Amino Acids get there finger print by their "R group" and they also have a carbonyl group. When in comes to Nutrition they have 4 calories per gram of protein. The best way to get protein is by eating foods with lots of protein in it. When you eat vegetables it’s recommended that you eat 65grams of protein compared to when you eat animals you only need 45 grams of protein. Protein is mostly used in the body to build, repair, and maintain muscle. Americans eat almost twice as much protein then their bodies need.
Lipids are fats, oils, and waxes. The main function of lipids is storing energy. Lipids have a polar end witch is hydrophilic and wants to attached to water, while their other end is non polar of hydrophobic. Lipids are chains and have a ratio equivalent to 25:50:2. in other words there is very little oxygen. A fatty acid is a long chain of carbon atoms connected to each other. Fatty acid is also the monomer of lipids. There are two kinds of fats, saturated and unsaturated. Unsaturated fats have at least one double bond in one of the fatty acids. Saturated fats have no double bonds. In nutrition there are nine calories per gram of fat. In your diet your should try to limit your fat intake to maintain your weight.
are sugars! They contain hydrogen, oxygen, and carbon in a ration of 1:2:1. Witch means they have six carbons, twelve hydrogen, and six oxygen. They contain large quantities of hydroxyl groups. If there is only one sugar molecule, it is called a monosaccharide. If there are two, it is a disaccharide. If there are three, it is a trisaccharide. If there is more then three it is a polysaccharide. The monomer is glucose. Glucose is used in cellular respiration and created by photosynthesis. Carbohydrates form rings. They are very polar witch means they like water.
They all have a lot of things in common. They all are the main parts of nutrition. They all are molecules that have different enzymes to break them down into energy. Dehydration synthesis occurs in all three.
They all have oxygen, hydrogen, and carbon.
In the end carbohydrates, proteins, and lipids, all are different with some similarities. The are the reason animals and plans exist on this planet. They are the Basis of life and help us survive. I have learned a lot about nutrition during this lesson. I never new what a polymer or monomer was and i never new the difference between saturated and unsaturated fat. I also never new how many calories were in nuts that surprised me a lot! . This lesson has really made me pay attention when I am at the grocery store and see things like “low fat” and “ no carbs!” I now know what those really mean.