If a species A has 10 organisms living in a given area, and species B has 1,000 organisms living in the same area, species B could be described as which of the following?
a. having a lower death rate compared to species A
b. having a higher growth rate compared to species A
c. having a higher species richness compared to species A
d. having a lower species richness compared to species A
c. having a higher species richness compared to species A
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The ethanol shock or heat shock test will separate which two bacteria?
a. C. perfringens and Clostridium ramosum b. Clostridium and Bifidobacterium c. Actinomyces and Bifidobacterium d. Eubacterium and Eggerthella
Which interaction is advantageous for one species, but has no effect on the other?
a. commensalism b. herbivory c. mutualism d. parasitism e. predation
Kaposi’s sarcoma is characteristic of people who
have a. AIDS. b. allergic reactions. c. a hypersensitive immune system. d. Graves’ disease. e. severe allergies.
Body fluids in humans have a high buffering capacity because of
A) the presence of the bicarbonate/carbonic acid buffer system. B) the natural result of water as a solvent. C) hydrogen bonding between water molecules in biological fluids. D) shifts in blood pH that are required to maintain homeostasis.