When blood flows through pulmonary capillaries, it picks up ___ and releases ___
a. carbon dioxide; carbon dioxide
b. carbon dioxide; oxygen
c. oxygen; oxygen
d. oxygen; carbon dioxide
e. oxygen or carbon dioxide; either
ANSWER: d
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Epinephrine blocks the contraction of muscles in the airways. Which of the other activities of epinephrine is most likely to be regulated by the same type of pathway?
A. Increased sweating. B. Stimulation of heart muscle cell contraction. C. Promotes the breakdown of glycogen in skeletal muscle cells D. Inhibition of saliva production in salivary glands E. Contraction of smooth muscle cells in blood vessels.
__________ superficially resemble bivalves
A. Brachiopods B. Rotifera C. Mollusca D. Bryozoa E. Chelicerata
A drug called ouabain specifically inhibits the sodium-potassium pump present in neuron cells. Over time, what would this action of ouabain cause?
A) the inside of the neuron to become more negative B) repolarization C) elimination of a concentration gradient D) more potassium to be transported into the neuron
The difference between latex agglutination and coagglutination is:
a. the type of particle used to carry the anti-body. b. the type of target organism involved. c. that coagglutination is less specific but more sensitive. d. that coagglutination, not latex agglutina-tion, can be used for direct antigen detec-tion.