iRAT 9 Flashcards
vitamin k is needed to produce pro thrombin, a protein needed for….
a. antioxidant function
b. bone calcification
c. night vision
d. blood clotting
D
the action of carotenoids is best described as
a. carcinogenic
b. decreasing cholesterol absorption
c. decreasing blood sugar
d. acting as an antioxidant
e. atherogenic
D
the visual pigment that helps transform energy from light into a nerve impulse sent to the brain is
a. rhodopsin
b. retinoic acid
c. opsin
d. retinal
A
in canada, dietary vitamins and mineral are labeled as
a. nutrients
b. multivitamin minerals
c. natural health products
d. supplements
hughie didn’t circle, but crossed out a and c
i think it may be d?
Some vitamins are lost in grain processing. Which nutrient typically is NOT added during enrichment of flour?? A. thiamin B. folic acid C. vitamin B6 D. niacin E. riboflavin
C
Many B vitamins are essential for the metabolism of energy yielding nutrients. They perform this function by binding to and promoting the activity of enzymes. In this role B vitamins act as A. coenzymes B. provitamins C. transport proteins D. hormones
A.
Which of the following nutrients can be converted into niacin and prevent pellagra? A. vitamin B6 B. thiamin C. tryptophan D. vitamin B12
C.
Scurvy is caused by A. unravelling of the triple helix protein called collagen B. lack of vitamin C C. a protein vitamin deficiency D. taking long cruises E. both A and B
E.
Vitamin E would be most plentiful in which types of food? A. fruit, dairy and vegetables B. nuts, oils and seeds C. meat, fats and fruits D. milk, meat and grains
B.
Which form of vitamin D comes from animal sources and is also made in our bodies? A. D2 = cholecalciferol B. D2 = ergocalciferol C. D3 = cholecalciferol D. D3 = ergocalciferol
C.
Which of the fat soluble vitamins has a paid turnover time and slow storage capacity in the body? A. A B. D C. E D. K
B.
Which of the following is not a good source of vitamin B12 A. lentils B. oysters C. beef liver D. milk E. Wendy's bacon cheeseburger
A.
The intake of \_\_\_\_\_\_ and \_\_\_\_\_\_ reduce the risk of muscular degradation A. beta carotene; lycopene B. alpha-carotene; beta cryptoxanthin C. lycopene; alpha-carotene D. lutein; zeaxanthin
D.
An elevation in homocysteine has been associated with increased risk of CD. In clinical studies, which vitamins have been shown to decrease levels of homocysteine in the blood? A. vitamin A, E, and C B. riboflavin, vitamin A, and folate C. niacin, riboflavin, and thiamine D. vitamin D, A and B6 E. vitamin B6, folate and vitamin B12
E.
Why must vitamin K intake be consistent with taking anticoagulant drug sodium warfarin?
A. because warfarin functions by interfering with the formation of active vitamin K, the amount of vitamin K consumed will influence the dose of the drug required.
B. because warfarin function by promoting the formation of active vitamin K, the amount of vitamin K consumed will influence the dose of the drug required
C. because warfarin functions as a vitamin K agonist, the less vitamin K consumed the more effective the drug is
D. sodium warfarin acts through metabolism unrelated to vitamin K
B.
