Amino acids are generally soluble in water and insoluble in non-polar organic solvents such as hydrocarbons. This again reflects the presence of the zwitterions. In water, the ionic attractions between the ions in the solid amino acid are replaced by strong attractions between polar water molecules and the zwitterions.hey are compounds containing an amino group, -NH2, and a carboxylic acid group, -COOH. The biologically important amino acids have the amino group attached to the carbon atom next door to the-COOH group. They are known as 2-amino acids. They are also known (slightly confusingly) as alpha-amino acids.
Common wrist/forearm problems include tendinitis of the muscles that extend your wrist, (bend wrist back). The technical name for this is lateral epicondylitis, also known as tennis elbow. You donât have to play tennis to get tennis elbow. Lateral epicondylitis (tennis elbow) can cause wrist/ forearm or hand pain.
Symptoms & Signs. Pain in the arm can result from a number of factors. Abnormalities or injury of the skin, nerves, bones, joints, blood vessels, and soft tissues of the arm can all result in pain. Arm pain, depending on the location and cause, may be accompanied by numbness, redness, swelling, tenderness, or stiffness of the joints. Sometimes diseases that affect other organs in the body, like peripheral vascular disease or arthritis, can be the cause of pain in the arm.