Scientists have found that the Bd infection ____
a. affects amphibians and fish
b. enhances lymphocyte production
c. may travel from low elevation to high elevation habitats
d. may travel from high elevation to low elevation habitats
e. cannot infect amphibians that never enter standing water
ANSWER: d
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Based on the functional roles of phosphate in various microbial metabolisms, deduce which compounds phosphate exists as in microorganisms
A) organic compounds B) inorganic compounds C) both organic and inorganic compounds D) neither organic nor inorganic compounds
The effect of directional growth shown in the accompanying figure is known to be caused by ____
a. thigmotropism b. gravitropism c. abscisic acid d. salicylic acid e. vernalization
What term describes the failure of one species' sperm to fertilize the egg of a different species?
A) Hybrid weakness B) Gametic incompatibility C) Mechanical incompatibility D) Mating time differences
You eat a bowl of beans as part of your dinner. As you digest the beans, the proteins that are present get broken down to their component amino acids. As your body destroys the macromolecules that were present in the beans, is the energy present in those molecules destroyed?
A. No. Breaking down molecules does not lead to the release of energy. B. No. While the vast majority of the energy contained in these macromolecules is converted to heat, it is not actually destroyed. C. No. The energy contained within these macromolecules is converted into other forms of chemical energy and kinetic energy, though some is lost as heat. D. Yes. By breaking down these macromolecules, some of the energy they contained is destroyed.