Chapter 12 Concept Checks

Question 1

Which fluid is the most basic (alkaline)?
a. Blood
b. Urine
c. Gastric juice
d. Water

Answer 1

a. Blood

Question 2

Which electrolyte is concentrated primarily outside the cells?
a. Sodium
b. Potassium
c. Magnesium
d. Phosphate

Answer 2

a. Sodium

Question 3

Mary has been in an accident and is losing blood. What hormone will the hypothalamus signal the release of to conserve water?
a. Renin
b. Angiotensin
c. Aldosterone
d. Antidiuretic hormone

Answer 3

d. Antidiuretic hormone

Question 4

Which is a trace mineral?
a. Iron
b. Calcium
c. Sulfur
d. Chloride

Answer 4

a. Iron

Question 5

Which statement is true regarding the absorption of minerals from food?
a. Minerals are easily destroyed by heat.
b. Spinach is a great source of easily absorbed iron.
c. Calcium is easily absorbed into the blood while potassium requires more effort.
d. Calcium is excreted when sodium intake is high.

Answer 5

d. Calcium is excreted when sodium intake is high.

Question 6

Which food contains oxalates that bind minerals, preventing their absorption?
a. Figs
b. Bananas
c. Sweet potatoes
d. Broccoli

Answer 6

c. Sweet potatoes

Question 7

If Caterina uses a teaspoon of salt on each of her three meals a day, roughly how much sodium has she consumed?
a. 3000 mg
b. 5000 mg
c. 7000 mg
d. 9000 mg

Answer 7

c. 7000 mg

Question 8

Which of the following is NOT a symptom of hypokalemia?
a. Irregular heartbeat
b. Vomiting
c. Muscular weakness
d. Glucose intolerance

Answer 8

b. Vomiting

Question 9

What do the enzymes that are activated by the binding of calmodulin and calcium do?
a. Harden and stabilize the teeth
b. Aid in the secretion of hormones
c. Regulate the transmission of nerve impulses
d. Break down glycogen to release energy for muscle contraction

Answer 9

d. Break down glycogen to release energy for muscle contraction