The primary, natural habitat of a pathogen where it continues to exist is called the
A. vector.
B. reservoir.
C. carrier.
D. fomite.
E. source.
Answer: B
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Lichens are a mutualistic association of a fungus and either an alga or a cyanobacterium in which
A) the fungus protects the photosynthetic partner from erosion. B) the fungus slowly engulfs the photosynthetic partner. C) the fungus helps collect sunlight for the photosynthetic partner. D) the phototroph provides phosphorus to the fungus.
Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
What will be an ideal response?
Which of the following is a marsupial mammal?
a. echidna b. hydrax c. Tasmanian devil d. manatee
Which of the following has the fastest rate of transport?
a. Channel-mediated diffusion b. Facilitated diffusion c. Active transport d. All of the above are equally fast.