Is the central ion of chlorophyll, and is necessary for photosynthesis.

Needed to make proteins and conduct nerve impulses.  Found in fruits and vegetables.

Facilitates synthesis of collagen and bone.

Is extremely important in metabolic processes and organ function.  Too much can cause vision problems and a copper ring in the cornea.

Important for bone development and fatty acid metabolism.

Not essential.  Too much interferes with bone and blood formation and may cause dementia.

Regulates thyroid hormones.

Found in Vitamin B-12.  Needed for blood cell production.

Is the central component of hemoglobin that allows oxygen to bind.  It causes our blood to be red.

Helps Control pH by acting as a buffer.  Is a component of stomach acid.

Aides enzymes in oxidation and energy-releasing reactions.

Needed for muscle contraction and nerve impulses.  Regulates water balance.

Found in bones, but also important for muscles and nerves.  A lack of it can lead to osteoporosis.

Helps build proteins, controls cell division.