The developing embryo in the accompanying figure is representative of development in a(n):

a. bird.
b. annelid.
c. sea star.
d. frog.
e. mammal.


d

Biology & Microbiology

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Fats and fatty acids

A. are insoluble in water. B. contain the same fatty acids. C. have the same number and location of C-C double bonds. D. have the same molecular length. E. are liquid or solid at room temperature, regardless of chemical composition.

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Which is the principle waste product if the body has excess amino acids?

a. Ammonia b. Nitrogen c. Urea d. Carbon dioxide

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The difference between intrapleural pressure and intra-alveolar pressure is

A) the driving force for air flow into and out of the lungs. B) zero. C) atmospheric pressure. D) approximately 100 mm Hg. E) transpulmonary pressure.

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Telomerase is an enzyme characteristic of normal cells that is active in DNA repair; most cancer cells have been found to lack telomerase

Indicate whether the statement is true or false

Biology & Microbiology