Exam 13: Essential Trace and Ultratrace Minerals

Match each mineral with a representative enzyme and the physiological roles for which that mineral is important. -copper

Which element,if present in high concentrations in the body,disrupts normal zinc functions?

Which of the following dietary substances inhibits uptake of nonheme iron?

Explain the uses of peroxidases.

Match each mineral with a representative enzyme and the physiological roles for which that mineral is important. -selenium

Match each mineral with the symptoms of its deficiency. -iodine

Nutrient-drug interactions caused by consuming amines in foods such as aged cheeses with monoamine oxidase inhibitors used to treat depression are most likely to result in ____.

Manganese functions both as an enzyme activator and as a constituent of metalloenzymes.

Which statement is false?

Arginase,a key enzyme in liver urea production,requires four ____ atoms per molecule.

Zinc deficiency could result in a secondary deficiency of folate,because polyglutamate hydrolase is a zinc-containing enzyme.

Absorption of dietary iron is regulated by ____,produced by the liver when iron stores are high and released to the blood to act at the surface of enterocytes and macrophages.

Which mineral facilitates transfer of electrons in the electron transport chain?

Excessive intake of nonheme iron interferes with absorption of which mineral by an unknown mechanism?

Hypochromic,microcytic anemia is associated with a deficiency of ____.

Overall,assessing the status of zinc is difficult and requires multiple measures.

Protein Regulation by Minerals: Zinc,copper,and iron regulate the expression of specific proteins,particularly those that are involved in ensuring cells receive these minerals,and those involved in preventing any toxicity associated with too much of a given mineral.Describe how excess zinc (or copper,but not both)and iron regulate the expression of a protein involved in their storage.Be specific-name any proteins and define all abbreviations.

Which mineral is thought to potentiate the action of insulin?

The chemistry of selenium is similar to that of ____.

The binding of iron by proteins defends the cells against ____.