Acid-fast cell walls contain high concentrations of
a) teichoic acid.
b) peptidoglycan.
c) pseudomurein.
d) mycolic acid.
Ans: d) mycolic acid.
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Design an experiment (including controls) to determine if a new kitchen chemical cleaner is mutagenic. Include in your answer how you would interpret the results
What will be an ideal response?
Traits that are shared by some, but not all, members of a group are known as:
A. synapomorphies. B. homologies. C. analogies. D. cladistics. E. alternative character states.
Most viruses?
A. infect only a few closely related species. B. infect only animal cells. C. cannot infect living cells. D. infect only plant cells. E. infect a wide variety of organisms.
Some scientists have suggested that recent outbreaks of sudden oak disease could be fought through the creation of transgenic plants with genetic resistance to sudden oak disease. What would be the source of this genetic resistance?
A. species of aphids with resistance to sudden oak disease. B. newly synthesized genes inserted into plants' genomes. C. species with unusually high levels of host plant resistance. D. domesticated apple trees adapted to North America. E. original host species in the source region of the disease.