Question:
Vibrio parahaemolyticus can grow in ______ NaCl.
Vibrio parahaemolyticus can grow in ______ NaCl.
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Remember that all *Vibrio* species (except *Vibrio cholerae*) are halophilic and require high salt environments, with *V. parahaemolyticus* surviving in up to 7-8% salt.
Updated On: Jul 10, 2026
- 0.0%
- 2.0%
- 4.0%
- 7.0%
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The Correct Option is D
Solution and Explanation
Step 1: Understanding the Concept:
*Vibrio parahaemolyticus* is a halophilic (salt-loving) bacterium commonly associated with seafood-borne gastroenteritis.
It has an absolute requirement for sodium chloride (NaCl) for its survival and growth.
Step 2: Detailed Explanation:
As an obligate halophile, *Vibrio parahaemolyticus* cannot grow in media containing 0.0% NaCl.
The bacterium has an optimum salinity requirement of around 3.0% NaCl, mimicking its natural marine habitat.
However, it exhibits wide salt tolerance and is capable of growing in media containing salt levels as high as 7.0% to 8.0% NaCl.
Among the given options, while it can grow in 2.0% and 4.0%, 7.0% is specifically highlighted to test the upper limits of its halophilic nature.
Step 3: Final Answer:
*Vibrio parahaemolyticus* is a halophile that can grow in salt concentrations up to 7.0% NaCl.
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