You inoculate a bacterium into three tubes of nutrient broth medium containing added salt: 0.5% NaCl, 5% NaCl, and 15% NaCl. After incubation, you notice signi?cant turbidity in the 15% NaCl medium and modest turbidity in the 5% NaCl medium. There is no growth in the third tube. This organism would be termed ______.

Question

Quizplus · Accepted Answer

The organism's growth in high salt concentrations (5% and 15% NaCl) but not in lower salt concentration (0.5% NaCl) indicates it is halophilic, meaning it thrives in high salt environments.

You Inoculate a Bacterium into Three Tubes of Nutrient Broth