The film of fluid in the pleural cavity functions to:
a. nourish the lungs.
b. rehydrate the lungs.
c. provide lubrication between the lungs and thoracic wall.
d. trap bacteria that may enter the lungs.
e. inflate the lungs.
C
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An F? donor includes F DNA plus a segment of bacterial chromosome DNA. If conjugation is interrupted before the entire F? chromosome transfers, what could be the expected consequences?
A) integration of some but not all F? genes into the recipient's chromosome B) a smaller F? plasmid than had been present in the donor C) failure of the F? strand to circularize in the recipient D) change of the recipient from F– to F+ E) formation of a recipient that is a stable partial diploid
Buttress roots help trees obtain oxygen from flooded soil
____________________ Indicate whether the statement is true or false.
The genus Frankia ________.
A. produces heat-resistant endospores and is strictly a marine bacterium B. is strictly a marine bacterium C. produces heat-resistant endospores D. grows in symbiotic association with the roots of some higher plants and fixes nitrogen
Ivana has a rapidly growing brain tumor and must be put on life support because she can no longer maintain appropriate heart and respiratory rates. She is also having trouble maintaining blood pressure. The most likely area that the tumor is affecting is
the ________. A) corpus callosum B) thalamus C) medulla oblongata D) occipital lobe