What is the difference between chlorophyll and bacteriochlorophyll, and which organisms contain each?
What will be an ideal response?
Answer: Chlorophylls are used in phototrophs where oxygen is released and can be present in bacteria in addition to eukaryotes. Bacteriochlorophylls are found only in anoxic phototrophs such as purple bacteria and are not present in eukaryotes.
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The most fundamental grouping in the classification of living organisms is the ____
a. family b. genus c. order d. species e. class
An example of keystone species are ____
a. beavers that build dams b. mice that feed on mushrooms and truffles c. Douglas fir trees d. kudzu e. earthworms that aid decomposition
What was the purpose of repeatedly drying, freezing, and thawing some of the fungi?
A. to kill the fungi B. to make the fungus more susceptible to the virus C. to prepare the fungi to infect the panic grass D. to remove the virus E. to prepare the fungi for growth at 65°C
Diagnosis of syphilis is usually made by
A) the MHA-TP test. B) culturing specimens on laboratory media. C) microscopic evaluation of stained specimens. D) DNA probes. E) a Pap smear.