The primary concern with exercise at altitude is:

What will be an ideal response?


The lower barometric pressure, limiting oxygen transport in the blood

Biology & Microbiology

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Strategies to fight HIV include

A. inhibition of the reverse transcriptase enzyme. B. inhibition of virus assembly. C. prevention of HIV entering healthy cells. D. prevention of other infections. E. a combination of all of the above.

Biology & Microbiology

Chaperone-type proteins that stabilize other proteins in response to environmental stresses such as

salinity, drought, heat, and cold are

a. systemins. b. phytoalexins. c. PR proteins. d. R genes. e. heat-shock proteins.

Biology & Microbiology

Thick filaments are composed primarily of ________, whereas thin filaments consist of ________

A) T tubules; Z discs B) actin; myosin C) myosin; actin D) Z discs; T tubules

Biology & Microbiology

Bony fishes possess two features not found in other fish. Select the best choice from those listed below to complete the following sentence. Bony fishes have

A. swim bladders and movable jaws. B. swim bladders and a closed circulatory system. C. swim bladders and a complete digestive system. D. swim bladders and gill covers called opercula.

Biology & Microbiology