Practice Quizzes

Chapter 11: Water-Soluble Vitamins

1: Which statement about water-soluble vitamins is true?
Emotional stress increases requirements for water-soluble vitamins.
Water-soluble vitamins provide more energy per gram than fat-soluble vitamins.
By eating a variety of healthful foods, most healthy people can meet their needs for water-soluble vitamins.
Water-soluble vitamins are less susceptible to being destroyed by heat than are the fat-soluble vitamins.
2: The _____ remove excess water-soluble vitamins from the bloodstream and excrete them.
kidneys
lungs
adrenal glands
large and small intestines
3: The primary role of B vitamins in the body is to
increase mineralization of bone.
provide energy.
enhance transport of nutrients across cell membranes.
act as coenzymes or a part of coenzymes.
4: Conversion of pyruvate to acetyl CoA halts when _____ is lacking.
thiamin
vitamin B6
vitamin B12
riboflavin
5: Which is not a sign or symptom of beriberi?
blindness
muscle weakness
edema
loss of appetite
6: Which food provides the most riboflavin per serving?
1 cup yogurt
5 saltine crackers
1 1/2 cups tossed salad
1 small banana
7: When protein intake is adequate, the body can make _____ from tryptophan.
thiamin
vitamin B12
niacin
vitamin B6
8: Biotin-containing enzymes participate in chemical reactions that add _____ to substances.
water
carbon dioxide
sulfur
cobalt
9: Abnormally low concentration of hemoglobin in the bloodstream is called
hypocysteine
anemia
cysteine
microblasts
10: Prolonged megadoses of vitamin B6 may cause
blood clots.
nerve damage.
carpal tunnel syndrome.
convulsions.
11: Folate deficiency can play a role in all of the following EXCEPT
anemia
neural tube defects
artherosclerosis
bleeding gums.
12: A substance produced by stomach cells that is needed for absorption of vitamin B12 is
R-protein.
intrinsic factor.
MFP.
transferocobalamin.
13: If an adult’s diet no longer supplies vitamin B12, it will take about _____ for this person to develop signs and symptoms of a B12 deficiency.
3 to 12 days
3 to 12 weeks
3 to 12 months
3 to 12 years
14: As an antioxidant, vitamin C may reduce the risk of the following diseases or conditions EXCEPT
cancer.
cataracts.
osteoporosis.
all of the above
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