Practice Quizzes

Chapter 13: Trace Minerals

1: Which of the following statements is true?
If soil does not contain a nutrient that a plant needs to grow, the plant will not be a good source of that nutrient when it's harvested.
Humans require less than 100 milligrams of each trace mineral per day.
Hair analysis is a reliable method of measuring trace mineral status of individuals.
Unlike the major mineral nutrients, the bioavailability of trace minerals is not affected by fiber, phytate, or the individual's need for that mineral.
2: Cytochromes are iron-containing compounds needed for
glycolysis.
the citric acid cycle.
beta-oxidation.
the electron transport chain.
3: Which of the following factors enhances iron absorption?
high need for iron
high calcium content of certain foods
high amount of phytates in whole grains
high levels of dietary zinc
4: Of the following foods, iron absorption would be the greatest from
creamed spinach.
tea with milk.
whole-grain cereal.
beans with tomato sauce.
5: Which of the following people has the highest risk of iron deficiency?
6-month old infant
50-year-old woman
middle-aged male
75-year-old man
6: Hemochromatosis
is caused by a high-iron diet.
results from chronic iron deficiency.
affects more women than men.
can result in organ damage and death.
7: Zinc absorption is inhibited by
fiber in whole grain bread.
phytates in whole grains.
high-dose non-heme iron supplements.
all of the above
8: Zinc deficiency is associated with all of the following conditions EXCEPT
chronic infection.
high red meat consumption.
diarrhea.
pneumonia.
9: _____ inhibit the absorption of selenium.
Vitamins A and C
Niacin and thiamin
Phytates and mercury
Tocopherols
10: ­_____ is the primary source of iodine in many Americans’ diets.
Emulsified salad dressing
Irradiated pork liver
Hydrogenated fat
Iodized salt
11: In humans, copper plays a role in the biosynthesis of the following substances EXCEPT
melanin.
vitamin C.
elastin.
collagen.
12: Toxic accumulations of copper in the liver, brain, and kidney are signs of
Menkes' syndrome.
hypothyroidism.
goiter.
Wilson's disease.
13: Which foods are poor sources of manganese?
oatmeal
meat
wheat bran
all of the above
14: Dentists caution their patients to not swallow fluoride because of the risk of
iron deficiency.
diarrhea.
fluorosis.
cretinism.
15: The most significant inhibitor(s) of iron absorption are/is
phytic acid
vitamin C
iodine
calcium
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