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

Biology & Microbiology

You might also like to view...

This polysaccharide is an important ECM component for the exoskeleton of many insects and shellfish.

A. proteoglycan B. glycosaminoglycans C. collagen D. chitin E. laminin

Biology & Microbiology

Genes associated with embryonic development are known as

A) homologous genes. B) sigma factors. C) heterologous genes. D) hopanoids. E) homeotic genes.

Biology & Microbiology

Mumps is a good candidate for elimination from the population due to

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.

Biology & Microbiology

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.

Biology & Microbiology