Colony Communication

Question 1 of 10

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What do the HCD genes expressed by the the gram -ve P.aeruginosa do?

Select one of the following:

  • Increase pathogenicity

  • Allow biofilm formation

  • Cause a fibrin clot barrier

Question 2 of 10

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At HCD, P.aeruginosa produced which Homoserine Lactone?

Select one or more of the following:

  • LasI, which are detected by LasR

  • RhlI which are detected by RhlR

  • Mrl, which are detected by MrR

  • FasI, which are detected by FasR

Question 3 of 10

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The homoserine lactones of P. aeruginosa can be detected in the sputum of Cystic fibrosis patients

Select one of the following:

  • True
  • False

Question 4 of 10

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The strains of S.aureus produce 1 of 4 peptides

Select one of the following:

  • True
  • False

Question 5 of 10

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What is the role of each peptide produced by S.aureus?

Select one or more of the following:

  • Stimulates other strains that produce the same peptide

  • Inhibits other strains that produce the same peptide

  • Stimulates other strains that produce different peptides

  • Inhibits other strains that produce different peptides

Question 6 of 10

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P2 & P3 are divergent promoters (they go in opposite directions)

Select one of the following:

  • True
  • False

Question 7 of 10

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In E.Coli, of the P3 stimulated proteins, AgrA is the intracellular transducer,....

Select one of the following:

  • AgrB is the exit channel, AgrD is the autoinducer, AgrC is the receptor

  • AgrV is the exit channel, AgrC is the autoinducer, AgrD is the receptor

Question 8 of 10

Medal-premium 1

P2 transcribes RNAIII

Select one of the following:

  • True
  • False

Question 9 of 10

Medal-premium 1

RNAIII controls 100s of genes

Select one of the following:

  • True
  • False

Question 10 of 10

Medal-premium 1

RNAIII binds to the mRNA close to the ribosomal binding site, and does what?

Select one of the following:

  • Alters the secondary structure to inhibit/promote ribosomal binding

  • Alters the super- secondary structure to inhibit/promote ribosomal binding

  • Alters the tertiary structure to inhibit/promote ribosomal binding

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Colony Communication

gina_evans0312
Quiz by , created almost 3 years ago

Medical Microbiology (Gene Transfer) Quiz on Colony Communication, created by gina_evans0312 on 23/02/2014.

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gina_evans0312
Created by gina_evans0312 almost 3 years ago
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