NDFS 100 Exam 3 BYU QUESTIONS AND CORRECT ANSWERS 100%

major roles of water in the body. (4) 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) 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 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. c. Acts as a catalyst for chemical reactions. Compare the types and safety of drinking water from different sources. 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) 1. Calcium 2. Potassium 3. Sodium 4. Magnesium Considered major because they're consumed in large quantities. trace minerals? (5) 1. Iron 2. Zinc 3. Iodine 4. Fluorine 5. Selenium functions of calcium. (7) 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