Joan wants to discover a microbe capable of degrading an environmental contaminant. Which of the following culturing methods would be most effective for isolation of such an organism?
A. cell culture
B. chemostat
C. quorum sensing
D. enrichment culture
E. differential culture
Answer: D
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In a cell-mediated immune response, how does a helper T cell activate cytotoxic T cells?
a. antibodies b. cytokine signaling c. receptor signaling d. via cross-talk with macrophages e. neural signaling
Members of which group(s) can be single-celled producers?
a. plants b. protists c. bacteria d. bacteria and protists e. bacteria and plants
Four of the five answers listed below are functional groups. Select the exception
a. R group b. amino group c. carboxyl group d. hydroxyl group e. methyl group
A patient has an upper GI endoscopic procedure and later develops a severe (endogenous/iatrogenic/secondary) infection with the Gram-negative pathogen known as CRE.
Fill in the blank(s) with the appropriate word(s).