Definition of protein for Students. : a nutrient found in food (as meat, milk, eggs, and beans) that is made up of many amino acids joined together, is a necessary part of the diet, and is essential for normal cell structure and function.
https://www.merriam-webster.com/dictionary/protein
Proteins are the building blocks of life. Every cell in the human body contains protein. The basic structure of protein is a chain of amino acids. You need protein in your diet to help your body repair cells and make new ones. Protein is also important for growth and development in children, teens, and pregnant women.
https://medlineplus.gov/ency/article/002467.htm
Amino acids are found in animal sources such as meats, milk, fish, and eggs. They are also found in plant sources such as soy, beans, legumes, nut butters, and some grains (such as wheat germ and quinoa). You do not need to eat animal products to get all the protein you need in your diet.
https://medlineplus.gov/ency/article/002467.htm
Another way to get protein in your diet is through supplements. Amino Acids can be found in pill form, individually and in complete protein combinations. More popular, however, are powdered proteins sourced from any variety of foods. Powdered whey (from milk) protein is very popular, as is soy protein.
https://www.verywell.com/what-is-protein-2704497
You Need Protein Daily. Eating the right amount and the right types of protein every day is important. If you consistently had a shortage of protein in your diet, your body would have no choice but to start breaking down proteins within your body to provide the amino acids needed to produce the most vital body proteins.
http://discovergoodnutrition.com/2014/10/what-is-protein/
Protein is three fourths of the dry weight of most cell matter and is involved in structures, hormones, enzymes, muscle contraction, immunologic response, and essential life functions. The amino acids involved are generally the 20 α-amino acids (for example, glycine, l-alanine) recognized by the genetic code.
http://medical-dictionary.thefreedictionary.com/Protein
However, nuts, seeds, beans, and dairy products are high protein foods as well. And whole grains such as brown rice, whole wheat, quinoa, barley and amaranth; and some vegetables, like avocados and sprouts, can be significant sources of protein too. Meat, dairy, and eggs are complete proteins. To get a complete protein, most grains, nuts, seeds, and vegetables have to be combined. Rice and beans or corn and beans are famous examples of complimentary proteins. It is worth noting that you don't have to get all essential amino acids in one meal.
https://www.verywell.com/what-is-protein-2704497
Definition of protein for English Language Learners. : a substance found in foods (such as meat, milk, eggs, and beans) that is an important part of the human diet.
https://www.merriam-webster.com/dictionary/protein
Whey protein is a mixture of globular proteins isolated from whey, the liquid material created as a by-product of cheese production. Whey protein is commonly marketed as a dietary supplement, and various health claims have been attributed to it in the alternative medicine community. Although whey proteins are responsible for some milk allergies, the major allergens in milk are the caseins.
https://en.wikipedia.org/wiki/Whey_protein
The proteins you eat, and the proteins in your body, are all made up of small units called amino acids. You often hear amino acids described as “building blocks,” because these small individual units are assembled in various ways to build proteins.
http://discovergoodnutrition.com/2014/10/what-is-protein/
what is protein for?????
Protein is for growth and development in children, teenagers, and pregnant women. Protein is for growth and development in children, teen, and pregnant women.