Vitamins Quiz

Consider the following: A patient complains of joint pain, has bleeding gums, and has a cut that is not healing. What vitamin deficiency might you suspect? A. vitamin C B. vitamin A C. vitamin D D. vitamin K

A.

The B vitamins act as coenzymes; small non-protein organic molecules that act as carriers of electrons. A. True B. False

A.

The majority of vitamin E in our diets arises from plant oils. A. True B. False

A.

Which of the following fat-soluble vitamins neutralize free radicals in the body? A. vitamin E B. vitamin A C. vitamin D D. vitamin K

A.

Electrolytes are responsible for: A. Acid-base balance B. Blood sugar levels C. Hemoglobin levels D. Hormone levels

A. Acid-base balance

Fat-soluble vitamins A. Are more stable than water-soluble vitamins B. Are found in all foods C. must be supplied daily D. Cannot be stored in the body

A. Are more stable than water-soluble vitamins

_______ are all good sources of potassium A. Bananas, oranges, and potatoes B. Tomatoes, apples, and carrots C. Cranberries, bananas, and rice D. Noodles, rice, and potatoes

A. Bananas, oranges, and potatoes

Vitamin C is required for the production and maintenance of: A. Collagen B. Hormone C. Ascorbic Acid D. Red Blood Cells

A. Collagen

A person who consumes the recommended amounts of milk or milk products will have an adequate intake of: A. Vitamins D and B2 B. Iron C. Vitamin A D. Thiamin

A. Vitamins D and B2

Antioxidants neutralise free radicals by: A. donating electrons B. donating neutrons C. accepting electrons D. accepting neutrons

A. donating electrons

Which of the following groups is least likely to require a vitamin and mineral supplement? A. healthy adults B. individuals with dark skin pigmentation C. vegans D. older adults

A. healthy adults

Because of thiamin's role in energy production, supplements of this vitamin have been shown to increase energy levels. A. True B. False

B.

The FDA approves dietary supplements before they are marketed. A. True B. False

B.

The grains, fruits, and vegetable groups are all good sources of vitamin B12. A. True B. False

B.

Which of these vitamins in destroyed by exposure to light? A. vitamin A B. riboflavin C. folate D. vitamin E

B.

Inadequate iodine intake leads to: A. Anemia B. Goiter C. Rickets D. Osteoporosis

B. Goiter

Vitamin E is responsible for: A. Absorption of vitamin C B. Protecting red blood cells from bursting C. Destroying vitamin A D. Oxidizing polyunsaturated fatty acids

B. Protecting red blood cells from bursting

The vitamin riboflavin is especially important to the synthesis of non-essential amino acids. A. True B. False

B. Riboflavin makes FAD/ FMN, which is involved in metabolism. It is vitamin B6 (Pantothenic acid) that is converted to PLP, and is involved in synthesis of non-essential amino acids.

Water-soluble vitamins A. Can be stored in the liver B. So not have to be included in the diet on a daily basis C. Are found in citrus fruits D. Are found in margarine

B. So not have to be included in the diet on a daily basis

The amino acid tryptophan can be used to synthesize: A. riboflavin B. niacin C. thiamin D. B12

B. niacin

Which of the following statements about herbal supplements is false? A. they are not tested for safety before they are marketed B. they are considered safe since they are of plant origin C. they don't require a prescription D. consumers can use them to manage their own health

B. they are considered safe since they are of plant origin

The fat-soluble vitamins include: A. A, B6, D B. C, Thiamin, K C. A, D, E, K D. Riboflavin, Folate, Pantothenic acid

C.

Vitamin D deficiency results in abnormal bone structure because_________. A. magnesium absorption increases B. collagen is not made correctly C. calcium absorption decreases D. there is insufficient antioxidant production

C.

Which of the following is not a function of Vitamin A? A. formation of the visual pigment rhodopsin B. maintenance of epithelial tissue C. formation of the blood clotting protein prothrombin D. regulation of gene expression

C.

Which of the following statements about vitamin K is false? A. it is necessary for the formation of prothrombin B. a deficiency results in decreased blood clotting C. it is produced by bacteria in the stomach D. long-term antibiotic use can result in a deficiency

C. It is produced in the large intestine

The term vitamin B complex refers to: A. Only thiamin and riboflavin B. Only niacin and folacin C. All water-soluble vitamins except absorbic acid D. Vitamin B6 and vitamin B12

C. All water-soluble vitamins except absorbic acid

Labeling standards for dietary supplements were defined by which of these legislative acts? A. FDA B. FTC C. DSHEA D. USDA

C. DSHEA

Iron absorption can be improved by A. Drinking milk daily B. Consuming foods high in vitamin A C. Eating high-iron foods with meat and foods high in vitamin C D. Storing food properly

C. Eating high-iron foods with meat and foods high in vitamin C

If a person has vitamin K deficiency, which of the following is likely to occur? A. Acne B. Formation of blood clots C. Excessive bleeding D. Acidosis

C. Excessive bleeding

Enrichment of flour with B vitamins resulted in a decline in mortality from which disease? A. berberi B. Wernicke-Korsakoff syndrome C. pellagra D. rickets

C. In the 1900s, people in the US were eating LOTS of corn, because it was cheap and plentiful. This was a double whammy, because niacin in corn is not bioavailable, and it also has a high leucine content, which interferes further with the tryptophan to niacin conversion. In addition to whole grains, niacin is also found in all protein-containing foods.

Consuming too much folate can mask a deficiency of what vitamin? A. B6 B. thiamin C. biotin D. B12

D.

Which of the following statements about bioavailability is false? A. The composition of the diet affects the amount of vitamins absorbed B. The conditions of the digestive tract affect vitamin bioavailability C. The bioavailability of vitamins depends on transport systems D. 95% of the vitamins in food are absorbed

D. The bioavailability of vitamins ranges from 40 to 90%

Water requirements increase with: A. Fever B. Diarrhea C. High-fiber diets D. All of the above

D. All of the above

Vitamins A. Provide energy B. Are all synthesized in the body C. Are needed in large amounts D. Are necessary for proper growth and development

D. Are necessary for proper growth and development

Vitamin A is important in: A. Helping the eyes adapt in dim light B. Maintaining healthy skin C. Preventing scurvy D. Both a and b

D. Both a and b

Vitamin C is: A. Always toxic in high doses B. Found in bread and cereal C. Stored in the body D. Involved in the conversion of folate to folic acid

D. Involved in the conversion of folate to folic acid

Vitamin B12: A. Is present is large amounts in green, leafy vegetables B. Prevents goiter C. Prevents scurvy D. Requires intrinsic factor secreted in the stomach to aid its absorption

D. Requires intrinsic factor secreted in the stomach to aid its absorption

Which of the following is not a good source of vitamin A? A. Dark-green, leafy vegetables B. Orange, vegetables, and fruits C. Liver D. Whole-wheat bread

D. Whole-wheat bread