The red-cockaded woodpecker that builds nests mainly in one type of tree that is of a certain age is a(n)
____________________ species. Fill in the blank(s) with the appropriate word(s).
ANSWER: specialist
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The apparent Vmax of dihydropteroate synthetase will _____________ when sulfanilamide is present while the Km of this enzyme will ______________
A. decrease / increase B. not change / increase C. decrease / decrease D. not change / decrease E. not change / not change
Algae appear in colors of gold, brown, red, or green. The significance of that fact is:
A. These pigments absorb the quality of light prevalent in their various preferred habitats and enhance their photosynthetic ability. B. These pigments camouflage them from grazers. C. These pigments warn grazers of their toxic properties. D. These pigments are waste products stored in the tissues. E. All of the other choices provided are incorrect.
Coastal regions where seawater mixes with fresh water from rivers, streams, and runoff are called ____
a. neritic zones b. estuaries c. benthos d. wetlands e. intertidal zones
Members of the alveolates are characterized by the presence of:
a. contractile vacuoles surrounded by a pellicle. b. micronuclei. c. macronuclei. d. heterocysts. e. flattened vesicles under the plasma membrane.