If blood cannot flow to a tissue, as in ischemia, the tissue quickly dies. Why?
What will be an ideal response?
Tissues need oxygen that is carried in the blood
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When you are studying with the TV on, which part of the brain filters out unnecessary sensory stimuli so that you can focus on your studies?
A. reticular activating system B. hypothalamus C. cerebellum D. basal nuclei E. limbic system
In his experiments, Griffith found that transformation occurs naturally in bacteria. Explain how Griffith found this out.
What will be an ideal response?
How can a carrot plant express a bacterial gene?
A) Because the bacterial gene hijacks the carrot's cellular machinery B) Because the genetic code is the same in both organisms C) Because of the wobble phenomenon D) Because of the degeneracy of the genetic code E) A carrot cannot express a bacterial gene.
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