When a person is exercising, CO2 builds up in the blood. What effect would this have on external respiration?
A) There would be increased diffusion of CO2 out of the blood and into the lungs and increased ventilation to move it out of the body.
B) There would be decreased diffusion of CO2 out of the blood and into the lungs and increased ventilation to move it out of the body.
C) There would be increased diffusion of CO2 out of the blood and into the lungs and decreased ventilation to move it out of the body.
D) There would be decreased diffusion of CO2 out of the blood and into the lungs and decreased ventilation to move it out of the body.
A
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a. oceanic ridges; oceanic trenches b. oceanic ridges; continental crusts c. oceanic trenches; oceanic ridges d. continental crusts; oceanic trenches e. oceanic trenches; continental crusts
Which is the most common protein in the body?
a. muscle b. collagen c. hemoglobin d. bone matrix e. insulin
Because of the mechanism of sex determination, males of many species can be neither homozygous nor heterozygous. Such males are said to be ________
A) dominant B) complementary C) hemizygous D) recessive E) None of the answers listed is correct.
Which describes the death of an interspecific embryo that failed to develop?
a. hybrid sterility b. hybrid breakdown c. hybrid inviability d. ecological barriers e. prezygotic isolation