Distilled water has a pH of 7 and is therefore ____
a. acidic
b. basic
c. neutral
d. ionic
c
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What is a nephron?
a) a structure that collects urine b) a glomerulus and its capsule c) a capillary bed within the medulla d) a functional unit of the kidney
About 95% of the lipids in the human diet are
A. cholesterol derivatives. B. lecithins. C. triglycerides. D. starches and other complex polysaccharides. E. phospholipids.
Resistance in the cardiovascular system
A. dramatically increases blood flow through the circulatory system. B. is directly related to flow (? R ? ? Flow). C. tends to increase if blood viscosity increases. D. does not occur. If it did, blood would not circulate in the blood vessels. E. tends to decrease as the diameter of blood vessels decreases.
Health care workers use a spirometer to measure the _____.?
A) ?level of carbon dioxide in the blood B) ?lungs' capacity for air C) ?amount of pressure in the lungs D) ?level of pleural fluid