The structural and functional unit of all living organisms is the
A. cell.
B. plasma membrane.
C. organelle.
D. ribosome.
E. organ.
A
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About 23% of the carbon dioxide in the blood is attached to the _______ portion of hemoglobin
A. heme B. globin C. carboxyl D. anhydrase
Enzymes which remove hydrogen atoms from their substrates are referred to as ________.
dehydrogenases hydrolases catalases peroxidases
A blood pH of 7.2 would be considered ________, while a pH of 7.6 would be ________.
A. acidosis; alkalosis B. acidosis; normal C. alkalosis; hyperalkalosis D. alkalosis; acidosis E. Both values are within the normal range.
In emphysema, all of the following occur except
A) alveoli collapse. B) compliance increases. C) there is elevated PCO2 in the blood. D) the surface area for gas exchange decreases. E) patients present with cyanosis.