Populations that occupy ____ inevitably experience low carrying capacities
a. ecotones
b. endangered habitats
c. small habitat patches
d. large habitat patches
e. small ecological niches
ANSWER: c
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Historical extinction rates are best known for
A. reptiles and amphibians. B. reptiles and birds. C. amphibians and fish. D. amphibians and birds. E. birds and mammals.
Which of the following pairs is incorrectly matched for cells and the molecules they secrete?
A. Neutrophils; heparin B. Basophils; heparin C. Mast cells; histamine D. Natural killer cells; toxic chemicals E. Eosinophils; toxic chemicals
Study of P elements in Drosophila has shown that gene regulation can be accomplished by differential mRNA transcript processing. Explain
What will be an ideal response?
The catabolite repression system in E. coli essentially represses the lac operon when glucose is present. What evolutionary advantage would favor evolution of such a system?
What will be an ideal response?