Membranes that do not contain glands are called
A. espiratory
B. serous
C. dense
D. mucous
Ans: B. serous
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All of the following are common habitats or hosts of chytrids EXCEPT ________.
A. freshwater B. mud C. insects D. the human intestine E. soil
A variety of finch species within the Hawaiian Islands have acquired different types of beaks needed for utilizing specific food resources. What is the likely process by which these different species of finches came about?
A. vertical descent with mutation. B. horizontal gene transfer. C. an accumulation of harmful genetic mutations.
_____________ bacteria tend to form clumps.
A) Gram-positive B) Gram-negative C) Acid-fast D) Endospore forming
If each human lung contains about 300 million alveoli with a summed total surface area for gas exchange of 40 square meters, what is the approximate surface area of a single alveolus?
A. 750 square micrometers B. 133 square millimeters C. 7.5 square micrometers D. 7.5 square millimeters E. 0.133 square micrometers F. 1.33 square micrometers