The earliest microbial fossils that have been found are dated from approximately 4.5 million years ago.
Answer the following statement true (T) or false (F)
False
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During a camping and hiking expedition in the Ice Age National Scenic Trail at Hartman Creek State Park (Waupaca, WI), an individual notices a small tick on his arm
After removing the partially embedded deer tick, what symptoms should this individual look for to indicate infection of Borrelia burgdorferi? Also, what should be done on future hiking trips to decrease the likelihood of B. burgdorferi infection? What will be an ideal response?
There is an autosomal gene that controls baldness, and its expression is sex-influenced. The gene for
baldness (B) is dominant in males but recessive in females. In females, the allele B1 for nonbaldness is dominant over the gene for baldness. If heterozygous, nonbald woman marries a nonbald man, what will be the appearance of their children? Work out the possibilities for each sex. What will be an ideal response?
A parasitic protist that presents a major health problem to backpackers and hikers if they drink unfiltered stream or lake water is
A) Didinium. B) Giardia. C) Plasmodium. D) Trypanosoma. E) Pfiesteria.
The major significance of Robert Koch's work is that
A) microorganisms are present in a diseased animal. B) diseases can be transmitted from one animal to another. C) microorganisms can be cultured. D) microorganisms cause disease. E) microorganisms are the result of disease.