Understanding Nutrition: Chapter 13 Exam Questions With 100% Verified Answers
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Understanding Nutrition
Institution
Understanding Nutrition
Understanding Nutrition: Chapter 13 Exam
Questions With 100% Verified Answers
Named for their small quantity in the body (not meant to diminish their significance) -
answertrace elements
Essential for iron metabolism and hemoglobin synthesis - answercopper
Key part of structure of several meta...
Understanding Nutrition: Chapter 13 Exam
Questions With 100% Verified Answers
Named for their small quantity in the body (not meant to diminish their significance) -
answer✔trace elements
Essential for iron metabolism and hemoglobin synthesis - answer✔copper
Key part of structure of several metalloenzymes - answer✔molybdenum
Antioxidant found in soil and crops - answer✔selenium
Biologically active components of plant-based foods that may have health benefits -
answer✔phytochemicals
Added to public drinking water to improve dental health - answer✔flouride
Essential part of thyroid hormones; also plays a role in maintaining energy balance -
answer✔iodine
Nutrient with roles in immune function, metabolism, growth, insulin production, and antioxidant
function - answer✔zinc
Important for insulin to be able to work effectively - answer✔chromium
Children with _____ deficiency are especially susceptible to lead toxicity - answer✔iron
Form of iron that is best absorbed; found only in animal flesh (meat, fish, poultry) -
answer✔heme iron
Regular use of calcium and iron supplements may impair absorption of the mineral _____ -
answer✔manganese
Trace minerals in supplements are tightly regulated by the FDA.
a)True
b)False - answer✔false
Iron can switch between ferrous iron and _____ iron. - answer✔ferric
Iron serves as a _____ to many enzymes. It is involved in many _______-_______ reactions. -
answer✔cofactor; oxidation-reduction
Iron participates in the electron transport chain to make ____. - answer✔ATP
The protein _____ is found in red blood cells. The protein _____ is found in muscle cells. -
answer✔hemoglobin; myoglobin
More iron is absorbed when stores are ____. - answer✔empty
_____ is the iron-storage protein, capturing iron from food. This iron is stored in _____ cells. -
answer✔ferritin; intestinal (small intestine)
If iron is needed, the storage protein releases it to the transport protein, _____. -
answer✔transferrin
If iron is not needed, the cells holding it are shed and removed in ____. - answer✔feces
High bioavailability; Found in animal foods; 25% is absorbed - answer✔heme iron
Found in plant and animal foods; 17% is absorbed; Influenced by dietary factors; Vitamin C
improves absorption - answer✔nonheme iron
_____ inhibits iron absorption and are found in foods including legumes, rice, and whole grains.
- answer✔Phytates
Vegetable ______ inhibit iron absorption and are found in soybeans and nuts. - answer✔proteins
_____ in milk can inhibit iron absorption. - answer✔Calcium
_____ in tea, coffee, and red wine inhibit iron absorption. - answer✔Polyphenols
Factors that inhibit iron absorption combined make it difficult to ______ iron absorption. -
answer✔estimate
Women of reproductive age need _____ mg/day of iron - answer✔18
Vegetarians need _____ times as much iron to make up for the low bioavailability typically in
their diet - answer✔1.8
Men need____ mg/day of iron - answer✔8
Iron deficiency is common among _____ people. - answer✔overweight
____ hormone production diminishes with iodine deficiency. The body responds by releasing
____ to increase iodine uptake. - answer✔Thyroid; TSH (thyroid
stimulating hormone)
With continued iodine deficiency, a visible _____ appears. - answer✔goiter
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