Certain toxins cause muscle paralysis. If the diaphragm is paralyzed, the most immediate
consequence is that _______________.
a. all gas exchange will stop
b. ventilation will not occur
c. all diffusion will stop
d. gas exchange will occur across the body
B
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The biochemical profiles of the stomach contents of herbivores, omnivores, and carnivores are qualitatively and quantitatively different
a. True b. False
Trichonympha is a unicellular flagellated protist that lives within termites and allows the termite to be able to "digest" wood. Trichonympha is which of the following?
A. a slime mold B. a protozoan C. an alga D. a diatom E. an apicomplexan
In which example are the proximate cause and the ultimate cause of morphological evolution correctly matched?
A. Proximate: point mutations in protein coding genes affect protein function and structure, ultimate: chemical and physical configuration of a protein affect its function B. Proximate: cis-regulatory elements are found upstream of a gene; ultimate: cis regulation is required to activate a gene C. Proximate: natural selection causes morphology to differ among species, ultimate: natural selection prevents morphological variation within a species D. Proximate: changes in gene regulation lead to changes in morphology; ultimate: natural selection favors morphologies that work best in their environment E. Proximate: natural selection favors gene combinations that have high fitness in their environment; ultimate: genetic changes alter morphology and fitness
Intracellular granules of organic or inorganic material that are stockpiled by bacteria for future use are called ________.
Fill in the blank(s) with the appropriate word(s).