Chapter 12 Nutrition Quizzes

Which of the following are trace elements?

Arsenic, boron, nickel, silicon

Iron is transported in what protein?

Blood Transferrin

A low selenium diet has been associated with certain types of this disease.

cancer

What is a copper containing plasma protein that converts iron to a form that can be transported and stored?

ceruloplasmin

High intakes of zinc stimulate the synthesis of this protein in the mucosal cells:

metallothionein

Which of the following statements about Keshan disease is incorrect?

middle aged men are most at risk

Too much fluoride in the body can cause

molted teeth

Which of the following is not true regarding iodine?

- More than half the iodine in the body is located in the thyroid gland. - Iodine is an essential component of thyroid hormones. - Iodine levels in the body are controlled by thyroid-stimulating hormone.

All of the following statements are true of selenium EXCEPT:

. Selenium supplementation above the RDA can reduce the incidence of lung, prostate, and colon cancers.

Identify the true statement regarding copper.

A copper deficiency usually causes iron deficiency anemia.

Which of the following is a true statement regarding copper absorption?

By inhibiting zinc absorption, phytates may enhance the absorption of copper.

Which statement about chromium supplementation is correct?

Chromium supplementation may improve the symptoms of those with type 2 diabetes

Chromium competes with zinc to bind to the transfer protein transferrin for transport in the blood.

False

Zinc and copper compete for absorption in the body.

False

Zinc is not significantly involved in the process of gene expression.

False

Iron is stored in what protein?

Ferritin

Mottled teeth are caused by an overabundance of which mineral?

Flouride

Which statement is true of fluoride?

Fluoride is attracted to calcium and is usually associated with calcified tissues such as teeth.

In the body, copper must be transported bound to protein because:

Free copper ions can trigger oxidation, leading to cellular damage.

Iron sources include:

Heme iron from animal products.

The anemia associated with iron deficiency is called

Microcytic anemia Hypochromic anemia Iron deficiency anemia

Which is the true statement about iron loss?

Most loss of iron from the body is associated with loss of blood.

Which of the following is not a true statement?

Phytates in cereal enhance the absorption of iron

The body regulates zinc absorption by:

Producing metallothionein when intake levels are high.

Which statement is true about the relationship between the antioxidant functions of selenium and vitamin E?

Selenium intake can reduce the need for vitamin E.

Which of the following statements is true regarding zinc deficiency?

Symptoms often resemble deficiencies of other nutrients.

Which is the true statement about iron requirements?

The RDA for young adult women is higher than the RDA young adult men.

Which of the following is true regarding iron absorption and transport in the body?

Transferrin transports iron from the mucosal cells of the small intestine into the bloodstream.

Acute toxicity of iron may be fatal

True

Molybdenum content of soil affects the amount found in food.

True

Pica is the compulsive ingestion of nonfood substances such as clay, laundry starch, and paint chips.

True

Selenium functions as an antioxidant by neutralizing free radicals.

True

Superoxide dismutase, which is vital for protecting cells against free radicals, may contain zinc.

True

The presence of trace elements in the diet is small, making them difficult to study.

True

Trace elements are needed in minute amounts, but deficiencies can be as devastating as deficiencies of other nutrients.

True

ron's primary function in the body is to transport oxygen as part of hemoglobin or myoglobin.

True

Which of the following statements is NOT true of chromium?

When chromium is deficient, insulin production slows.

Which of the following is true of zinc absorption?

When zinc intake is high, zinc absorption decreases.

Which statement about iodine and the thyroid gland is true?

Without iodine, thyroid hormones cannot be made, causing the thyroid gland to enlarge.

Which of the following is a false statement regarding zinc's function in the body?

Zinc is needed for synthesis of vitamin E.

What is the primary function of iodine in the body?

a component of thyroid hormones, which regulate metabolic rate

A deficiency of iodine often causes an enlarged thyroid gland that forms

a goiter

The symptoms of zinc deficiency include all of the following except:

anemia

All of the following are adequate sources of nonheme iron except:

apples

Which of the following is the poorest source of iodine?

apricots

Chromium is thought to work by

binding to insulin receptors

One form of the enzyme superoxide dismutase (SOD), which has antioxidant properties, contains the trace element __________.

copper

Iodine deficiency during pregnancy may cause _____________ in the infant.

cretinism

Fluoride has shown to be effective in preventing _________.

dental caries

Most of the fluoride in the U.S. comes from

drinking water and toothpaste

Which is the best indicator of iron stores in the body

ferritin

___________ is an inherited condition that causes individuals to absorb and accumulate too much iron.

hemochromatosis

Iron is a component of the protein, ________, that binds and transports oxygen in the bloodstream

hemoglobin

Iodine deficiency during childhood and adolescence has been known to cause

impaired mental function

Which of the following trace elements is not a component of an antioxidant enzyme?

iodine

Lack of which trace element is the most common nutritional deficiency worldwide?

iron

The following are functions of copper except:

normal sexual development

The richest source of copper in the diet is

organ meats such as liver and heart

The zinc deficiency in Iranian and Egyptian men occurred because

phytates in the diet bound too much zinc, making it unavailable.

Copper deficiency is most likely to occur in

pre-term infants

_________ is (are) a good source of zinc

red meat

Which mineral functions to protect the body from oxidative damage and also helps synthesize thyroid hormone?

selenium

____________ is a component of gluthathione peroxidase that helps destroy free radicals.

selenium

The trace minerals are difficult to study because

some trace minerals are required in such small amounts that environmental contamination can obscure experimental results.

Which of the following is NOT a good source of heme iron?

spinach

Molybdenum is required for all of the following except:

the synthesis of collagen

The best source of chromium is

whole grains

When the intake of ________ is high, copper absorption into the blood is inhibited.

zinc

Superoxide dismutase may contain:

zinc, coper, manganese