Enterococcus faecium is characteristically able to grow in the presence of high concentrations of salt.

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Prepare for the Clinical Laboratory Science Bacteriology Test. Engage with multiple choice questions and flashcards with helpful hints and explanations. Ace your exam confidently!

Multiple Choice

Enterococcus faecium is characteristically able to grow in the presence of high concentrations of salt.

Explanation:
Salt tolerance is a distinctive feature used to identify Enterococcus species. Enterococcus faecium can grow in 6.5% NaCl, a condition that inhibits many other streptococci. This ability to survive in high-salt environments is what labs look for to distinguish Enterococcus from non-enterococcal streptococci, especially when combined with bile esculin positivity and PYR positivity. They are typically non-hemolytic on blood agar, which helps differentiate them from beta-hemolytic organisms. So, the statement about growing in high concentrations of salt directly reflects Enterococcus faecium’s characteristic trait.

Salt tolerance is a distinctive feature used to identify Enterococcus species. Enterococcus faecium can grow in 6.5% NaCl, a condition that inhibits many other streptococci. This ability to survive in high-salt environments is what labs look for to distinguish Enterococcus from non-enterococcal streptococci, especially when combined with bile esculin positivity and PYR positivity. They are typically non-hemolytic on blood agar, which helps differentiate them from beta-hemolytic organisms. So, the statement about growing in high concentrations of salt directly reflects Enterococcus faecium’s characteristic trait.

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