Which of the following Acyl-HSL is produced by P. aeruginosa? Which of the following is false with respect to siderophores? Which bacterial exotoxin is composed of two non-associat... Which of the following Acyl-HSL is produced by P. aeruginosa? Which of the following is false with respect to siderophores? Which bacterial exotoxin is composed of two non-associated proteins? Which end product is formed in the cathodic chamber of MFC?
Understand the Problem
The question is a multiple-choice format asking for specific knowledge related to microbiology, particularly regarding acyl-HSL produced by Pseudomonas aeruginosa, siderophores, bacterial exotoxins, and the products formed in the cathodic chamber of MFC (Microbial Fuel Cells).
Answer
3-oxo dodecanoyl HSL, False: Siderophores transport iron to host, C2 toxin, Water.
The Acyl-HSL produced by P. aeruginosa is b) 3-oxo dodecanoyl HSL. The statement that is false with respect to siderophores is a) siderophores transport iron to host bacteria. The bacterial exotoxin composed of two non-associated proteins is c) C2 toxin. The end product formed in the cathodic chamber of MFC is d) Water.
Answer for screen readers
The Acyl-HSL produced by P. aeruginosa is b) 3-oxo dodecanoyl HSL. The statement that is false with respect to siderophores is a) siderophores transport iron to host bacteria. The bacterial exotoxin composed of two non-associated proteins is c) C2 toxin. The end product formed in the cathodic chamber of MFC is d) Water.
More Information
P. aeruginosa primarily uses 3-oxo dodecanoyl HSL for quorum sensing. Siderophores typically transport iron to bacteria, not to the host. C2 toxin is a well-known example of a binary toxin composed of two parts. Water formation in the cathodic chamber of MFCs results from reduction processes.
Tips
Be careful not to confuse the role of siderophores, and note that exotoxins can have complex structural differences.
Sources
- Acyl-homoserine lactone quorum sensing in Gram-negative bacteria - ncbi.nlm.nih.gov
- The Pseudomonas aeruginosa Quorum-Sensing Molecule N-(3-oxo-dodecanoyl)-L-homoserine lactone - pmc.ncbi.nlm.nih.gov
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