Most drug-resistant bacteria isolated from patients contain a(n)
A) R plasmid.
B) T1 phage.
C) reverse transcriptase.
D) ?-lactam.
Answer: A
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Cold and freezing are very effective in killing bacteria
Indicate whether this statement is true or false.
Cells destined to develop into muscle tissue are transplanted to an area where cells are destined to become epithelial cells. If these cells are under autonomous specification what will happen? The cells will
A. develop into muscle tissue. B. develop into epithelial tissue. C. develop into both muscle and epithelial tissue. D. not develop if transplanted. E. develop into connective tissue.
Most plants get nitrogen _______________
Fill in the blank(s) with the appropriate word(s).
Naturally acquired passive immunity can result from the _____
A) injection of vaccine B) ingestion of interferon C) placental transfer of antibodies D) absorption of pathogens through mucous membranes