Quiz 5 Flashcards
(17 cards)
Muscle pain, wasting, and heart damage result from a deficiency of
a. Selenium
b. Vitamin A
c. Vitamin E
d. Vitamin C
A
Vitamin D regulates the absorption of ______ from the small intestine.
a. calcium and phosphorus
b. calcium and fluoride
c. phosphorus an magnesium
d. calcium and magnesium
A
An excess of free radicals can cause damage to cell components, but some free radicals actually have beneficial roles. Which of the following is a beneficial role of free radicals in the body?
a. destruction of pathogens
b. repair of DNA
C promotion of tumor growth
d. acceleration of fat loss
A
Tetany may be a sign of low blood levels from which nutrient?
a. phosphorus
b. calcium
c. fluoride
d. none of the above
B
Fatty fish is a source of Vitamin D
True
Reduced blood calcium levels would result from the actions of
a. calcitriol
b. calcitonin
c. parathyroid hormone
d. all of these choices are correct
B
Antioxidants
a. damage cell membranes
b. promote the formation of free radicals
c. donate electrons to free radicals
d. speed the rate of chemical reactions
C
Postmenopausal women are more prone to fractures than premenopausal women primarily because
a. low progesterone levels accelerate bone loss
b. older women are unable to maintain physical activity
c. low estrogen levels accelerate bone loss
d. accumulation of iron in the blood depletes bone minerals
C
Which nutrient can be considered both a vitamin and a hormone
Vitamin D
Probiotics help to reinforce the integrity of the gastrointestinal tract by forming a network of proteins that blocks the movement of pathogens through its lining. If the integrity of the GI tract lining is compromised, pathogens can move more easily into the blood. This condition of compromised integrity of the GI tract is called
a. the gut microbiota
b. a leaky gut
c. a metchinikoff gut
d. an wutimmune disease
B
vitamin E functions as an antioxidant by
a. activating glutathione peroxidase
b. donating and accepting electrons in watery environments such as the blood
c. protecting saturated fatty acids in red blood cells form oxidative damage
d. donating and accepting electrons in lipid environments, such as cell membranes
D
which is a good source of provitamin A carotenoids
a. cauliflower
b. grapes
c. low fat milk
d. sweet potatoes
D
When a cell membrane is damaged by free radicals, which specific component of the cell membrane is damaged
Phospholipids
plants contain pigments called ______ that can be turned into vitamin A in the body if needed
Carotenoids
Vitamin C contributes to bone health by virtue of its role in
a. mineral absorption
b. antioxidant reactions
c. immune function
d. collagen synthesis
D
Flavonoids, carotenoids and sterols are examples of
a. zoochemical
b. toxic chemicals
c. phytochemical
d. provitamin A
C
Crucifeorus vegetables such as _____ are rich in cancer-preventing phytochemical
a. cabbage and cauliflower
b. carrots and sweet potatoes
c. onions and sweet potatoes
d. spinach and Swiss chard
A
