Which of the following best defines the Bohr effect?

a. The amount of a gas that diffuses across a membrane depends on the differences in the gas' partial pressure.
b. The ability of hemoglobin to bind oxygen depends on the partial pressure of oxygen.
c. In a mixture of gases, the total pressure of the mixture is the sum of the pressures of the individual gases.
d. pH causes a displacement of the oxygen-hemoglobin dissociation curve.
e. As the concentration of chloride ions increases, the ability of hemoglobin to bind carbon dioxide decreases.


d

Biology & Microbiology

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Which of the following defense mechanisms are found in invertebrates?

a. phagocytes b. lysozyme c. antibodies d. phagocytes and lysozyme e. phagocytes, lysozyme, and antibodies

Biology & Microbiology

Refer to the accompanying figure. Based on the phenotypes of the third generation, the genotype of the father in the second generation must be:


a. homozygous for albinism.
b. heterozygous for hair color.
c. heterozygous for albinism.
d. X-linked.
e. dominant

Biology & Microbiology

Population control factors that arise from outside the population are called 

A. extrinsic limiting factors. B. density-independent limiting factors. C. intrinsic limiting factors. D. density-dependent limiting factors.

Biology & Microbiology

The seasonal cessation of activities accompanied by a reduction in metabolism in response to cold temperatures during winter is called

A) hibernation. B) torpor. C) heterothermy. D) diapause.

Biology & Microbiology