Proteins are made from amino acids. An amino acid has three parts that are joined to a central carbon atom. Identify the three parts that create an amino acid. amino group fatty acid carboxyl group R group C group A chain of 2 carbon atoms and a nitrogen atom is shown. The middle carbon atom is bonded to a hydrogen atom and an R group. The other carbon atom is double-bonded to an oxygen atom and single-bonded to a hydroxyl group. The nitrogen atom is bonded to 2 hydrogen atoms.

amino group, fatty acid carboxyl group and R group.

Explanation:

The three parts from which amino acid is formed are the amino group, carboxyle group and R group. These amino acids are the building block of proteins. There are certain foods which contain proteins such as meat and pulses etc. When these foods are eaten, the protein broken down into amino acid with the help of enzymes and absorbed by the cells for building of muscles and other substances in our body.

when you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. this increases the space in your chest cavity, into which your lungs expand. the intercostal muscles between your ribs also enlarge the chest cavity. they contract to pull your rib cage both upward and outward when you inhale.