The different species within an ecosystem that interact in various ways make up a(n)
A) trophic level. B) ecotone. C) community. D) population. E) aggregation.
C
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The hormone, ___, gives us that hungry feeling
when our stomachs are empty.
a. leptin b. ghrelin c. ADH d. insulin e. glucagon
The bands on chromosomes correspond to
A. gene-poor regions. B. gene-rich regions C. regions where specific proteins attach to the chromosomes. D. regions actively transcribing RNA. E. regions where genes are not transcribing RNA.
In a lichen that is in a mutually beneficial relationship, what does the mycobiont receive?
a. aid in sexual reproduction b. enhanced dispersal of offspring c. nutrients d. protection from herbivory
Genotypes are said to be in ________ equilibrium if there is random mating and no other forces tend to alter the proportions of alleles from one generation to the next.
A. Mendelian B. homeostatic C. steady-state D. Hardy-Weinberg