M11 Assessment : Vibrio

Cholera toxin increases the activity of  

• Adenyl cyclase
• Coagulase
• Catalase
• Hyaluronidase

Vibrio cholerae produces a toxin which

• inhibits protein synthesis
• alters electrolyte balance in epithelial cells
• prevents nerve impulse transmission
• invades the intestinal linings.

What condition does not favor the transmission of cholera?

• Acidic environments
• Alkaline environments
• Salty environments
• Monsoon season

All of the following Vibrio sp. are halophilic, except:

• V.cholerae
• V.parahaemolyticus
• V. alginolyticus
•  V. fluvialis

Each of the following agents is a recognized cause of diarrhea except

• Escherichia coli
• Klebsiella pneumoniae
• Vibrio cholerae
• Vibrio parahaemo;yticus