External gills that are later replaced by paired lungs are found in:
a. fish
b. amphibian larvae
c. frogs
d. reptiles
e. mammals
b
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The enveloped viruses typically obtain their envelope
A. from the host plasma membrane. B. as they exit the host. C. from a newly constructed viral-derived membrane. D. from the nuclear membrane. E. from the host plasma membrane AND as they exit the host.
Nonsteroid anti-inflammatory drugs such as aspirin and ibuprofen reduce fever and decrease inflammation and pain by
directly inhibiting cAMP synthesis. Indicate whether the statement is true or false.
Embryonic endoderm gives rise to:
a. muscle. b. the lining of the digestive tract. c. the nervous system. d. skin. e. skeletal tissue
Which of these lists is in the correct order of differentiation?
A) stem cells to plasma cells to B cells B) B cells to stem cells to plasma cells C) stem cells to B cells to plasma cells D) B cells to plasma cells to stem cells E) plasma cells to B cells to stem cells