Select all that applyWhich of the following are ions that can be found only in trace amounts in the plasma?Multiple select question.Mg2+HCO3-Cu2+K+Ca2+Zn2+

The ions that can be found only in trace amounts in the plasma are Cu2+ and Zn2+.

Here's why:

1. Mg2+ (Magnesium): This is a major ion in the body, not just a trace element. It plays a role in over 300 enzymatic reactions, including metabolism of food and synthesis of fatty acids and proteins.

2. HCO3- (Bicarbonate): This is a major ion in the body. It is a part of the body's pH buffering system.

3. Cu2+ (Copper): This is a trace element in the body. It is involved in many physiological processes, but only small amounts are required.

4. K+ (Potassium): This is a major ion in the body. It is crucial for heart function and plays a key role in skeletal and smooth muscle contraction.

5. Ca2+ (Calcium): This is a major ion in the body. It is necessary for the function of nerves and muscles, and it plays a role in blood clotting.

6. Zn2+ (Zinc): This is a trace element in the body. It is necessary for the function of over 300 enzymes and is involved in many important processes in the body.