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
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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.
Which is the principle waste product if the body has excess amino acids?
a. Ammonia b. Nitrogen c. Urea d. Carbon dioxide
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.
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