NSD post test 20

Overdosing on which nutrient can cause skin to turn yellow-orange? a. beta-carotene b. vitamin A c. choline d. folate e. vitamin C

a

Storing fruit by which method causes the greatest loss of vitamin C? a. drying b. freezing c. flash-freezing d. canning e. poaching

a

What are chemical substances that activate enzymes and assist in the conversion of proteins, carbohydrates, and fats into energy called? a. coenzymes b. hormones c. provitamins d. precursors e. coactivators

a

Long-term use of antibiotics can result in a deficiency of which nutrient? a. vitamin A b. vitamin K c. thiamin d. choline e. biotin

b

Since 1998, grain products have been fortified with which vitamin in an effort to reduce the incidence of neural tube defects? a. calcium b. folic acid c. vitamin A d. biotin e. thiamin

b

What is the leading cause of blindness in most developing countries? a. vitamin D deficiency b. vitamin A deficiency c. bacterial infections d. sun damage e. beta-carotene deficiency

b

Which of the following is associated with insufficient vitamin A? a. digestion of proteins decreases b. growth of new skin cells decreases c. replacement of worn-out cells decreases d. blood clotting decreases e. the ability to build collagen decreases

c

Which of the following substances is considered a precursor to a vitamin A? a. bioflavonoids b. biotin c. beta-carotene d. beriberi e. alpha-carotene

c

Nuts are a good source of which nutrient? a. vitamin C b. vitamin D c. choline d. vitamin E e. biotin

d

What are chemical substances that are missing an electron and are prone to oxidizing nearby atoms called? a. antioxidants b. provitamins c. precursors d. free radicals e. antivitamins

d

Which compound is a bogus vitamin? a. vitamin D3 b. beta-carotene c. vitamin B12 d. coenzyme Q10 e. niacin

d

Which of the following foods is a good source of riboflavin? a. nuts b. beef c. tomatoes d. milk e. liver

d

What are chemical substances that perform specific functions in the body, such as serving as coenzymes, called? a. carbohydrates b. proteins c. minerals d. water e. vitamins

e

Which of the following is the main naturally rich food source for vitamin D? a. beef b. lamb c. potatoes d. sunflower oil e. fish

e

Which vitamin is needed for building collagen? a. vitamin A b. vitamin D c. vitamin E d. vitamin B12 e. vitamin C

e