The classic work of Huffaker demonstrated that orange-eating mites were able to survive predation by "mite-eating" mites provided that:
A. the starting size of the orange-eating mite
population was large compared to that of the
mite-eating mites.
B. the starting size of the mite-eating mite
population was below a certain threshold.
C. the orange-eating mites were provided
with ample food sources.
D. the orange-eating mites had access to
"refuges" where they were safe from
predation.
E. the mite-eating mites had access to
"refuges" where they were isolated from
parasites that infected orange-eating mites.
D
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Hawaiian fruit flies provide an example of which of the following?
a. founder effects b. genetic drift c. adaptive radiation d. founder effects and genetic drift e. founder effects, genetic drift and adaptive radiation
Cellular respiration starts in the cytoplasm with the process of
1.glycogenolysis. 2.gluconeogenesis. 3.glycolysis. 4.the Krebs cycle. 5.none of the choices
Which of the following statements about the protein calmodulin is TRUE?
It interacts directly with the ligand receptor. It interacts directly with the G protein. It binds to Ca 2+ ions to mediate a cellular response. It binds to the Ca 2+ ion channel causing it to close. It induces ATP hydrolysis.
Refer to the accompanying figure. Which of the following is a steroid hormone?
a. 1
b. 3
c. 6
d. 8
e. 10