Which of the following types of plasmids allows a bacterial cell to kill its competitors?
A) virulence plasmids
B) fertility plasmids
C) bacteriocin plasmids
D) resistance plasmids
E) cryptic plasmids
C
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The coding regions of a gene are known as ________.
Fill in the blank(s) with the appropriate word(s).
The immunoglobulin associated with Type I hypersensitivity is
A. IgG. B. IgA. C. IgM. D. IgE. E. IgD.
The membranes inside the chloroplast are called the
1.cristae. 2.stroma. 3.thylakoid membrane. 4.golgi. 5.endoplasmic reticulum.
Why can cholesterol act as a “fluidity buffer” in cell membranes?
a. It is slightly amphipathic because of the presence of one hydroxyl group. b. It is slightly hydrophobic because of the presence of one hydroxyl group. c. It is slightly hydrophobic because of the presence of one carboxyl group. d. It is slightly amphipathic because of the presence of one carboxyl group. e. It is slightly hydrophilic because of the presence of one hydrocarbon group.