What is 'Quorum Sensing'?
A. The phenomenon whereby the accumulation of signaling molecules enable a single bacterial cell to sense the number of bacteria (cell dentistry)
B. The phenomenon whereby the accumulation of signaling molecules enable a single macrophage to sense the number of bacteria (cell dentistry)
C. The phenomenon whereby the accumulation of signaling molecules enable a single B lymphocyte to sense the number of bacteria (cell dentistry)
D. The phenomenon whereby the accumulation of signaling molecules enable a single Helper T lymphocyte to sense the number of bacteria (cell dentistry)
E. The phenomenon whereby the accumulation of signaling molecules enable a single Neutrophil to sense the number of bacteria (cell dentistry)
Answer: A. The phenomenon whereby the accumulation of signaling molecules enable a single bacterial cell to sense the number of bacteria (cell dentistry)
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A. integrins promote the activation of signaltransduction pathways. B. integrins are kinases. C. extracellular matrix proteins are receptors and integrins are ligands.
What is the major difference between animals and fungi in how they obtain nutrients?
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The side group (R group) of the amino acid shown above contains which of the following functional
groups?
a. hydroxyl b. carbonyl c. carboxyl d. sulfhydryl e. amino
In the electron transport system, the final hydrogen (electron) acceptor is
A. oxygen. B. ATP. C. acetyl. D. NAD.