NDFS 100 Exam 3 BYU Questions With
Complete Solutions
major roles of water in the body. (4) correct answer: 1. Transport
2. Osmosis (Fluid/Electrolyte Balance)
3. Lubricate, cushion (important for spinal cord, organs, etc)
4. Temperature (regulated through sweat)
factors influencing the amount of water needed by the body. (7) correct answer: 1. Alcohol consumption
2. Changes in Environment (altitude/humidity)
3. Illness/Medications/Vomiting
4. Hot weather
5. Physical activity
6. Pregnancy and breastfeeding
7. Very young or old age (brain doesn't process they're thirsty)
Which does NOT affect the amount of water a person needs?
a. Age
b. Type of Water
c. Activity Level
d. Temperature of Environment correct answer: b. Type of Water
Which of the following is NOT a function of water in the body?
a. Carries nutrients throughout the body.
b. Carries wastes away from cells. c. Acts as a catalyst for chemical reactions. d. Aids in maintaining the body's temperature. correct answer: c. Acts as a catalyst for chemical reactions.
Compare the types and safety of drinking water from different sources. correct answer: All types of water in the U.S. are safe. Hard and soft water equal value
Can get water from foods, such as broccoli or even steak.
major minerals? (4) correct answer: 1. Calcium
2. Potassium
3. Sodium
4. Magnesium
Considered major because they're consumed in large quantities.
trace minerals? (5) correct answer: 1. Iron
2. Zinc
3. Iodine
4. Fluorine
5. Selenium
functions of calcium. (7) correct answer: 1. Mineralization of bones and teeth - Combines with phosphorus and collagen (vitamin C) - Bones are "banks" for blood calcium needs
2. Nerve transmission 3. Blood pressure
4. Blood clotting
5. Muscle contraction and relaxation
6. Storage
7. Activates Cell Enzymes Which is not a major role of calcium of the body?
a. Blood clotting
b. Muscle contraction
c. Blood glucose regulation
d. Nerve transmission correct answer: c. Blood glucose regulation
functions of magnesium. (4) correct answer: 1. Assists with enzymes/cell functions
2. used in release of energy from nutrients
3. Heart Function
4. metabolism of K, Ca, Vit D
major functions of sodium. (5) correct answer: 1. Works hand in hand with potassium. 2. Fluid and electrolyte balance (extracellular)
3. Muscle contractions
4. Nerve transmission
5. Acid Base Balance
functions of potassium. (3) correct answer: 1. Fluid and electrolyte balance (Intracellular)
2. Maintaining heart beat
3. works with sodium
function of iodine. correct answer: Synthesis of thyroid hormones regulate basal metabolism
functions of iron. (2) correct answer: 1. Hemoglobin and myoglobin (carries oxygen)
Complete Solutions
major roles of water in the body. (4) correct answer: 1. Transport
2. Osmosis (Fluid/Electrolyte Balance)
3. Lubricate, cushion (important for spinal cord, organs, etc)
4. Temperature (regulated through sweat)
factors influencing the amount of water needed by the body. (7) correct answer: 1. Alcohol consumption
2. Changes in Environment (altitude/humidity)
3. Illness/Medications/Vomiting
4. Hot weather
5. Physical activity
6. Pregnancy and breastfeeding
7. Very young or old age (brain doesn't process they're thirsty)
Which does NOT affect the amount of water a person needs?
a. Age
b. Type of Water
c. Activity Level
d. Temperature of Environment correct answer: b. Type of Water
Which of the following is NOT a function of water in the body?
a. Carries nutrients throughout the body.
b. Carries wastes away from cells. c. Acts as a catalyst for chemical reactions. d. Aids in maintaining the body's temperature. correct answer: c. Acts as a catalyst for chemical reactions.
Compare the types and safety of drinking water from different sources. correct answer: All types of water in the U.S. are safe. Hard and soft water equal value
Can get water from foods, such as broccoli or even steak.
major minerals? (4) correct answer: 1. Calcium
2. Potassium
3. Sodium
4. Magnesium
Considered major because they're consumed in large quantities.
trace minerals? (5) correct answer: 1. Iron
2. Zinc
3. Iodine
4. Fluorine
5. Selenium
functions of calcium. (7) correct answer: 1. Mineralization of bones and teeth - Combines with phosphorus and collagen (vitamin C) - Bones are "banks" for blood calcium needs
2. Nerve transmission 3. Blood pressure
4. Blood clotting
5. Muscle contraction and relaxation
6. Storage
7. Activates Cell Enzymes Which is not a major role of calcium of the body?
a. Blood clotting
b. Muscle contraction
c. Blood glucose regulation
d. Nerve transmission correct answer: c. Blood glucose regulation
functions of magnesium. (4) correct answer: 1. Assists with enzymes/cell functions
2. used in release of energy from nutrients
3. Heart Function
4. metabolism of K, Ca, Vit D
major functions of sodium. (5) correct answer: 1. Works hand in hand with potassium. 2. Fluid and electrolyte balance (extracellular)
3. Muscle contractions
4. Nerve transmission
5. Acid Base Balance
functions of potassium. (3) correct answer: 1. Fluid and electrolyte balance (Intracellular)
2. Maintaining heart beat
3. works with sodium
function of iodine. correct answer: Synthesis of thyroid hormones regulate basal metabolism
functions of iron. (2) correct answer: 1. Hemoglobin and myoglobin (carries oxygen)
