Hard water has high concentrations of:
a. sodium and chloride
b. calcium and fluoride.
c. magnesium and sodium.
d. sulfur and potassium.
e. calcium and magnesium.
e
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The most effective behavior to lose weight is:
a. to focus on staying on a weight-loss diet. b. to adopt a lifestyle of eating healthy and being physically active. c. to initially restrict kcalorie intake to 800 kcal per day. d. to accept that prejudging people by weight is not as harmful as prejudging by race, religion, or gender.
All of the following are true statements regarding the duration of breastfeeding and the introduction of solid foods EXCEPT: a. solid foods should not be introduced until the baby is eight months old.
a. solid foods should not be introduced until the baby is eight months old. b. generally, the first solid food introduced to infants should be rice cereal. c. breast milk should supply the vast majority of nutrients for the first six months. d. ideally, breastfeeding should continue through the first year of life.
When aldosterone is secreted, what is its role in electrolyte balance?
a. increases excretion of potassium by the kidney b. increases excretion of sodium by the kidney c. decreases reabsorption of sodium by the kidney d. decreases excretion of potassium by the pancreas
What is the RDA for calcium for school-age children aged 9–13 years?
A. 800 mg/day B. 1,000 mg/day C. 1,100 mg/day D. 1,200 mg/day E. 1,300 mg/day