NDFS 100 Exam 3 BYU || Questions and 100% Verified
Answers.
What are the major roles of water? correct answers Transports nutrients; dissolves amino acids,
glucose, minerals, etc. to be excreted; coolant; cleansing agent.
What factors increase fluid needs? correct answers Alcohol; cold weather; breastfeeding &
pregnancy; surgery, blood loss, burns, medications, etc; children; elderly; certain diseases; forced
air environments -- airplanes, sealed buildings, etc.
Hard water is high in what? correct answers Calcium and magnesium
Soft water is high in what? correct answers Sodium
What foods can be sources of water? correct answers Celery and lettuce
What are examples of surface water? correct answers Lakes, rivers, reservoirs
What are surface waters exposed to? correct answers Acid rain and pollution
What things can remove contaminants from surface water? correct answers Plants,
microorganisms, and sunlight
What can ground water be contaminated by? correct answers hazardous waste, dumps, oil and
gas pipelines, sewage
Where is ground water found? correct answers Underground
What type of water takes longer to decontaminate? correct answers Groundwater
What is the main function of calcium? correct answers Strong bones and teeth
What are other functions of calcium? correct answers Nerve transmission, blood pressure &
clotting, muscle contraction
What are calcium food sources? correct answers Dairy, green vegetables
What are calcium toxicities? correct answers Constipation, lowered absorption of other minerals
(especially Iron), kidney stones
What is the main function of magnesium? correct answers Assists more than 300 enzymes
What are other functions of magnesium? correct answers Muscle function, bone mineralization
, What are magnesium food sources? correct answers Nuts, legumes, seafood, dark green foods,
dark chocolate
What are the functions of sodium? correct answers Muscle contraction, fluid balance, nerve
transmission, acid-base (pH) balance
What are sodium food sources? correct answers Salt, processed (fast) food, condiments and
seasonings
What are sodium toxicities? correct answers Hypertension (high blood pressure), increased risk
for heart disease and stroke.
What is the main function of potassium? correct answers Muscle contractions
What are other functions of potassium? correct answers Fluid & electrolyte balance, maintaining
steady heartbeat
What are potassium food sources? correct answers Fruits and vegetables
What is the main function of iodine? correct answers Thyroid regulation
What is the other function of iodine? correct answers Metabolic rate
What are iodine food sources? correct answers Seafood, fast food, baked food, milk, salt and sea
salt (if iodized)
What are iodine deficiencies? correct answers Goiter (thyroid neck growths) stunted physical and
mental growth
What is the function of iron? correct answers Hemoglobin & myoglobin
What are food sources of heme iron? correct answers Animal Meat (red)
Which iron is easily absorbed? correct answers Heme iron
Where is non-heme iron found? correct answers All foods other than meat
Which type of iron is NOT easily absorbed? correct answers Non-heme iron
What helps iron absorption? correct answers Vitamin C
What is iron-deficiency called? correct answers Anemia
What inhibits iron absorption? correct answers Coffee, tea, milk (Tannins, phytates, & fiber)
What are iron toxicities? correct answers Hemochromatosis: increased iron absorption
Answers.
What are the major roles of water? correct answers Transports nutrients; dissolves amino acids,
glucose, minerals, etc. to be excreted; coolant; cleansing agent.
What factors increase fluid needs? correct answers Alcohol; cold weather; breastfeeding &
pregnancy; surgery, blood loss, burns, medications, etc; children; elderly; certain diseases; forced
air environments -- airplanes, sealed buildings, etc.
Hard water is high in what? correct answers Calcium and magnesium
Soft water is high in what? correct answers Sodium
What foods can be sources of water? correct answers Celery and lettuce
What are examples of surface water? correct answers Lakes, rivers, reservoirs
What are surface waters exposed to? correct answers Acid rain and pollution
What things can remove contaminants from surface water? correct answers Plants,
microorganisms, and sunlight
What can ground water be contaminated by? correct answers hazardous waste, dumps, oil and
gas pipelines, sewage
Where is ground water found? correct answers Underground
What type of water takes longer to decontaminate? correct answers Groundwater
What is the main function of calcium? correct answers Strong bones and teeth
What are other functions of calcium? correct answers Nerve transmission, blood pressure &
clotting, muscle contraction
What are calcium food sources? correct answers Dairy, green vegetables
What are calcium toxicities? correct answers Constipation, lowered absorption of other minerals
(especially Iron), kidney stones
What is the main function of magnesium? correct answers Assists more than 300 enzymes
What are other functions of magnesium? correct answers Muscle function, bone mineralization
, What are magnesium food sources? correct answers Nuts, legumes, seafood, dark green foods,
dark chocolate
What are the functions of sodium? correct answers Muscle contraction, fluid balance, nerve
transmission, acid-base (pH) balance
What are sodium food sources? correct answers Salt, processed (fast) food, condiments and
seasonings
What are sodium toxicities? correct answers Hypertension (high blood pressure), increased risk
for heart disease and stroke.
What is the main function of potassium? correct answers Muscle contractions
What are other functions of potassium? correct answers Fluid & electrolyte balance, maintaining
steady heartbeat
What are potassium food sources? correct answers Fruits and vegetables
What is the main function of iodine? correct answers Thyroid regulation
What is the other function of iodine? correct answers Metabolic rate
What are iodine food sources? correct answers Seafood, fast food, baked food, milk, salt and sea
salt (if iodized)
What are iodine deficiencies? correct answers Goiter (thyroid neck growths) stunted physical and
mental growth
What is the function of iron? correct answers Hemoglobin & myoglobin
What are food sources of heme iron? correct answers Animal Meat (red)
Which iron is easily absorbed? correct answers Heme iron
Where is non-heme iron found? correct answers All foods other than meat
Which type of iron is NOT easily absorbed? correct answers Non-heme iron
What helps iron absorption? correct answers Vitamin C
What is iron-deficiency called? correct answers Anemia
What inhibits iron absorption? correct answers Coffee, tea, milk (Tannins, phytates, & fiber)
What are iron toxicities? correct answers Hemochromatosis: increased iron absorption
