DHN 101 Exam 3 Actual Verified Exam Questions And
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Other provitamin A carotenoids include zeaxanthin and
_____, two important components of the macula that help
eye health. - Answer-lutein
Matching vitamins with food sources - Answer-E: plant oils
D: fortified milk
K: dark green leafy vegs
C: citrus fruits
Vitamin supplements are sometimes used by the general
public for therapeutic purposes. Of the following medicinal
uses of vitamins, which vitamin supplement/health
outcome is the only one proven in scientific research to be
beneficial? - Answer-nicotinic acid ( a form of niacin) for
lowering LDL and increasing HDL levels
Performed vitamin A carotenoids - Answer-liver, fish oils,
fortified milk, eggs, fortified margarine
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Provitamin A carotenoids - Answer-carrots, spinach, winter
squash, sweet potatoes, mangoes
Gabe's grandfather has a history of heart disease and is
on anticoagulant drug therapy. His prescription drugs
include Coumadin (warfarin). What dietary precaution
should his grandfather be taking? - Answer-avoid any
large increases in dark green, leafy vegetable intake
because vitamin K can reduce effectiveness of
anticoagulants and promote blood cells
Vitamin A in the form of beta-carotene is a fat-soluble pro-
vitamin found primarily in dark orange and yellow fruits
and vegetables. Fat is required to transport fat-soluble
nutrients, but most fruits and vegetables that are good
sources of this fat-soluble pro-vitamin are low in fat or fat-
free. How can you enhance the body's absorption of fat-
soluble pro-vitamins when preparing low-fat foods rich in
these vitamins? - Answer-you can add olive oil or
margarine to vegetables after they are cooked
A food product that contains fat has the potential for
spoilage when that fat becomes oxidized and rancid. The
germ in the whole wheat kernel contributes fat to whole
wheat bread products. If a bread's ingredient list contains
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whole wheat flour, water, yeast, sugar, and BHT, which
ingredient is serving as the antioxidant intended to extend
the bread's shelf life? - Answer-BHT
In order to be classified as a vitamin, a compound must
meet a number of criteria to be an essential nutrient.
Check all that apply: - Answer-the body can't synthesize
enough of the compound to maintain health and absence
of the compound from the diet for a defined period
produces deficiency symptoms that, if caught in time, are
quickly cured when the substance is resupplied
Matching vitamins with their roles - Answer-A: vision
D: a hormone
E: antioxidant that prevents breakdown of Vitamin A
K: activates blood clotting factors
Why are older people at increased risk for vitamin B-12
deficiency compared to younger people? - Answer-As you
age, your stomach produces less acid, which limits
cleavage of vitamin B-12 from food. In addition, decreased
production of intrinsic factor by the stomach limits vitamin
B-12 absorption
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While breastmilk has a near-perfect nutritional profile for
infants, breast milk is low in vitamin D. Formula-fed infants
who do not receive much sunlight may also be at risk for
vitamin D deficiency. Recently, the American Academy of
Pediatrics doubled its recommendation for childhood
vitamin D supplementation and now recommends that all
children receive how much vitamin D per day? - Answer-
400 IU
Gabe was experiencing fatigue, despite sleeping eight
hours per night. He went to the doctor and was diagnosed
with iron-deficiency anemia. The doctor recommended he
eat iron-fortified breakfast cereals. Which food would be
the best accompaniment for his iron-fortified breakfast
cereal and why? - Answer-He should have a cup of orange
juice or an orange with the iron-fortified breakfast cereal
because vitamin C in the orange increases iron
absorption.
Alternate names for vitamins - Answer-Riboflavin -->
Vitamin B-2
Ascorbic acid --> Vitamin C
Niacin --> Vitamin B-3