Oxygen-hemoglobin dissociation curves at three different pH levels The phenomenon illustrated in the accompanying figure is known as:
a. carbon dioxide unloading.
b. the Bohr effect.
c. hemoglobin transportation.
d. chloride shift.
e. residual capacity.
b
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Inthe dark, when rhodopsin is ____, rods ____ glutamate
a. active; release b. inactive; inhibit release of c. active; inhibit release of d. inactive; release e. inactive; inhibit synthesis of
A reason given by scientists as to why viruses are not considered living organisms is that
A. viruses can be frozen and still survive. B. viruses do not reproduce on their own. C. viruses are all smaller than the smallest known cells. D. viruses do not contain a nucleus. E. viruses do not contain genetic information.
New alleles arise by
a. mutation. b. migration. c. genetic drift. d. random mating. e. independent assortment.
Suppose you are given a set of regression results on the role of a random treatment assignment experiment on the effect of an ad campaign on consumers' willingness to buy your product. The regression results report an R-squared of 0.04. How should you value the regression results?
A. Highly, despite the low R-squared it is likely the effect estimated is causal and valuable for active prediction. B. Highly, the R-squared value is still high enough to justify that the effect is causal. C. Not highly, the implied correlation of the R-squared is too low. D. Not highly, the R-squared is far too low.