Proteins Proteins are large molecules that are made

Proteins

Proteins are large molecules that are made up of amino acids there are 20 types of amino acids Different combinations of amino acids lead to the creation of different proteins that have a certain functions within our bodies The body will create the proteins it needs from the code found in our DNA The shape of the protein is important part of the proteins function in the body. If a proteins shape is altered and damage it will lose its ability to carry out its function. The term to describe the change in proteins shape is Denaturation. the body is constantly breaking down and building different proteins

Amino Acids All twenty amino acids share the same chemical backbone created from an amine group and an acid group connected to a central Carbon atom. what creates the differences in the amino acid is the side chain which is made up of different atoms in different arrangements amino acids are joined together through peptide bonds. 9 amino acids are called essential amino acid because our bodies cannot produce at all or produce in high enough amounts. Therefore we must obtain them through our diet.

Body Uses for Protein ● ● ● are used in cell growth, repair and maintenance o when proteins are broken down the amino acids are reused somewhere else in the body can act as enzymes and hormones helps maintain fluid and electrolyte balance helps maintain a strong immune system o Antibodies are a type of protein which is used to fight off foreign substance in the body Proteins serve as an energy source o there is no form in which proteins are stored in the body for energy. When the body uses proteins for energy it takes them from the bloodstream or body tissue. o In a healthy person proteins provide very little to the energy needs, The human body can not store excess protein. ○ the Recommended Dietary Allowance (RDA) for a sedentary person is 0. 8 grams/kg of body weight per day.