Which of the following minerals acts as an antioxidant in conjunction with vitamin E?
1.magnesium
2.selenium
3.zinc
4.calcium
Question 2
All of the following are true regarding zinc EXCEPT:
1.plant foods are a good source.
2.deficiency results in growth failure.
3.it is a component of insulin and many enzymes.
4.supplements may decrease the duration and severity of the common cold.