A person is MOST likely to contract diseases such as Rocky Mountain spotted fever and ehrlichiosis if he or she visits/participates in

A) camping and hiking in the backcountry.
B) metropolitan cities.
C) snow skiing.
D) European countries.


Answer: A

Biology & Microbiology

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What nucleotide change is a shared derived character for species A, B, and C, but not for species G?

Note: A,T,G, and C refer to nucleotide bases, and the numbers refer to the position of the base in the nucleotide sequences. For example, A6 refers to an adenine at the sixth position.



A. Changing the second G to an A is common to species A, B, and C, but not to species G.
B. Changing the fifth T to a G is common to species A, B, and C, but not to species G.
C. Changing the second G to a T is common to species A, B, and C, but not to species G.
D. Changing the second G to an A and the fifth T to a G is common to species A, B, and C, but not to species G.
E. None of these show a change in derived characteristics for A, B, and C that are not found in G.

Biology & Microbiology

Lake ecosystems have many trophic levels

Indicate whether the statement is true or false.

Biology & Microbiology

Describe archaea methanogens

What will be an ideal response?

Biology & Microbiology

Each of the following is fermentation products except

A) ethanol. B) lactate. C) propionate. D) acetyl CoA. E) butyrate.

Biology & Microbiology