Chapter 11

Which of the following is a property of the fat-soluble vitamins?

Deficiency symptoms may take years to develop on a poor diet

Which of the following disorders may result from vitamin E deficiency in people?

Erythrocute hemolysis

Which of the following can the body use to synthesize vitamin D?

Exposure to sunlight

Knowing the role of vitamin K in the body, in what organ would you expect to find it in large quantities?

Liver

The first detectable sign of vitamin A deficiency is usually

Night Blindness

Which of the following is a characteristic of vitamin D nutrition?

Prolonged exposure to sunlight degrades the vitamin D precursor in skin, thus preventing vitamin D toxicity

What is/are the main function(s) of vitamin D?

Promotes calcium and phosphorus absorption and promotes calcium mobilization from bone

What form of vitamin A supports vision but not growth?

Retinal

What form of vitamin A supports reproduction but not growth?

Retiniol

Which of the following organs is NOT required for the complete synthesis of activated vitamin D?

Small intestine

Which of the following is a feature of vitamin D?

The average consumption in the United States does not meet the recommended intake

Approximately what percentage of the body's vitamin A stores are found in the liver?

90

With what vitamin is opsin usually associated in the body?

A

What population group is most vulnerable to vitamin A toxicity?

Children

Which of the following compounds serves as the major precursor for the body's synthesis of vitamin D?

Cholesterol

Which of the following is a feature of vitamin K?

Bacteria in the intestines synthesize bioavailable vitamin K

Which of the following food substances can be converted to vitamin A in the body?

Beta-carotene

In what chief capacity does vitamin K function?

Blood Clotting

Why are primary vitamin E deficiencies rarely observed in human beings?

The vitamin is widespread in foods

The main function of vitamin E in the body is to act as a(n)

antioxidant