Biology 2e
Biology 2e
2nd Edition
ISBN: 9781947172517
Author: Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher: OpenStax
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Chapter 9, Problem 3VCQ

Figure 9.17 Which of the following statements about quorum sensing is false?

  1. Autoinducer must bind to receptor to turn on transcription of genes responsible for the production of more autoinducer.

  • The receptor stays in the bacterial cell but the autoinducer diffuses out.
  • Autoinducer can only act on a different cell: it cannot act on the cell in which it is made.
  • Autoinducer turns on genes that enable the bacteria to form a biofilm.
  • Chapter 9, Problem 3VCQ, Figure 9.17 Which of the following statements about quorum sensing is false? Autoinducer must bind

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    A white blood cell has pathogen recognition proteins embedded in its plasma membrane. Initially, the the pathogen recognition proteins are spread over the whole surface of the white blood cell. The white blood cell comes into contact with a bacterial cell. Some of the pathogen recognition proteins bind to the lipoteichoic acid molecules on the surface of the bacterial cell. As time goes on, more and more of the pathogen recognition proteins bind to the lipoteichoic acid molecules on the bacterial cell surface. The white blood cell membrane at the point of contact between these 2 cells now contains a dense cluster pathogen recognition proteins. How is it possible for the pathogen recognition proteins to go from being equally distributed on the white blood cell surface to being clustered at the point of contact?

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