What is a hematocrit measuring?
A) the percentage of blood that is comprised of red and white blood cells
B) the percentage of blood that is comprised of red blood cells only
C) the percentage of blood that is comprised of plasma
D) the amount of hemoglobin in blood
E) the amount of oxygen that can be transported by blood
Ans: B) the percentage of blood that is comprised of red blood cells only
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The exchange of oxygen and carbon dioxide between air in the alveoli and blood in the pulmonary capillaries is called _____.?
A) ?external respiration B) ?internal respiration C) ?cellular respiration D) ?oxidation
How does antidiuretic hormone affect the permeability of the collecting ducts to water?
a) it increases their permeability b) it does not affect their permeability c) it decreases their permeability
Describe the composition and functional roles of semen.
What will be an ideal response?
Which of the following is used at extremely high temperatures to destroy living organisms?
a. cold tray c. radiation b. autoclave d. ultrasound