If N2 gas comprises 79% of atmospheric air at sea level, what is the partial pressure of N2?
a. about 300 mm Hg
b. about 500 mm Hg
c. about 600 mm Hg
d. about 700 mm Hg
Ans: c. about 600 mm Hg
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A. proteoglycan B. glycosaminoglycans C. collagen D. chitin E. laminin
Genes associated with embryonic development are known as
A) homologous genes. B) sigma factors. C) heterologous genes. D) hopanoids. E) homeotic genes.
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A. the existence of an effective vaccine. B. a human-only reservoir. C. the absence of a latent state. D. a single serotype. E. All of the choices are correct.
Free energy
A. includes the energy lost as heat. B. is the amount of energy gained by breaking bonds of a chemical. C. differs for a given reaction depending on the number of steps involved. D. always results in a decrease in total energy. E. is the amount of energy gained by breaking bonds of a chemical AND differs for a given reaction depending on the number of steps involved.