Some fungi and higher plants form a beneficial association known as
A. galls.
B. haustoria.
C. mycorrhizae.
D. lichens.
E. vectors.
Answer: C
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The characterization of prions demonstrated that:
A. this viruslike structure can cause disease. B. secondary structure of a prion can cause disease. C PrPC causes disease. D. this viruslike structure and secondary structure of a prion can both cause disease. E. secondary structure of a prion and PrPC both cause disease.
The skin would be an example of
a. a first line of defense. b. a second line of defense. c. a third line of defense. d. all of these. e. none of these.
The resting potential of a typical eukaryotic cell is _______ mV.
a. 0 b. -60 c. +60 d. -100
We know that from their mother's milk, infants gain proteins called antibodies that protect them from specific germs. We also know that proteins will eventually be broken down by a person's digestive system. How is it that these antibodies can get into
the bloodstream of the breast-feeding infant intact? Use only the information from this chapter. What will be an ideal response?