Pathogenic bacteria such as E. coli O157:H7 and Staphylococcus aureus have a strong selection pressure to refrain from activating an immune response until their numbers are great. ________ is thus an effective way these pathogens control production of
certain virulence factors.
a. Attenuation
b. Differentiation
c. Signal transduction
d. Quorum sensing
Answer: D
You might also like to view...
Which two triose phosphates are produced during the Calvin cycle and are the starting points for starch and sucrose synthesis?
A) 3-phosphoglycerate and glyceraldehyde-3-phosphate B) dihydroxyacetone phosphate and glyceraldehyde-3-phosphate C) ribulose-1,5-bisphosphate and glycerol phosphate D) dihydroxyacetone phosphate and glycerate-1,3-bisphosphate E) 3-phosphoglycerate and ribulose-1,5-bisphosphate
Which of the following would be more likely to
affect an animal’s habitat than its niche? a. rainfall b. prey abundance c. predators d. defense mechanisms e. competitors
During mitosis the cytoplasm of the cell is settled down
a. true b. false
Arrestin binding to GPCRs __________.
a) causes the binding of additional G proteins b) stabilizes G proteins c) causes denaturation of G proteins d) stabilized GPCRs e) prevents further activation of additional G proteins