Which nutrient cycle does not have a gaseous phase?
a. hydrologic cycle
b. nitrogen cycle
c. carbon cycle
d. sulfur cycle
e. phosphorus cycle
e
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In the axoneme, nexin
A) is an incomplete microtubule. B) slides microtubules past one another. C) projects inward at each doublet. D) links adjacent doublets. E) is a complete microtubule.
What is one result of the bottleneck effect?
a. balanced alleles b. heterozygosity c. decreased genetic diversity d. disruptive selection e. random mating
In commensalism ________.
A. the host and commensal cannot be separated and remain viable and the commensal is metabolically dependent on the host B. the commensal is metabolically dependent on the host C. the host and commensal can be separated and remain viable D. the host provides some factor that the commensal cannot get otherwise
The uniformity in the way nerve cells function within the animal kingdom
A) indicates that the peripheral nervous system (PNS) evolved before the central nervous system (CNS). B) is evidence that the neuron was an early evolutionary adaptation. C) is proof of neurotransmitter efficiency. D) must have prevented the development of diversity.