DES is called an "endocrine disrupting chemical" because it structurally resembles, and interferes with, the endocrine secretions of the _____

A) thyroid gland
B) adrenal medulla
C) ovaries
D) hypothalamus


C

Biology & Microbiology

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The percentage of different colored water boatmen eaten by fish were graphed relative to the frequency of that color in the population.  Based on the graph, a population of water boatmen would _____



A.  increase in rare genotypes.
B.  have no variation in genotype frequencies.
C.  lose rare genotypes.
D.  increase in size.
E.  decrease in genetic variability.

Biology & Microbiology

Chemical reactions that have a positive G are ____

Fill in the blank with the appropriate word.

Biology & Microbiology

Biofilm formation by Pseudomonas bacteria on the surface of a natural loofa sponge kept in the shower is an example of which type of relationship? 

A. Commensalism B. Parasitism C. Mutualism D. Predation

Biology & Microbiology

In the equilibrium theory of island biogeography, variation in numbers of species on islands of different sizes is seen as a function of differences in:

A) immigration rates. B) extinction rates. C) neither of the above.

Biology & Microbiology