Neisseria lactamica can be differentiated from Neisseria meningitidis by its ability to metabolize which sugar?

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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

Neisseria lactamica can be differentiated from Neisseria meningitidis by its ability to metabolize which sugar?

Explanation:
Carbohydrate use is a practical way to separate closely related Neisseria species. Neisseria lactamica can ferment lactose, while Neisseria meningitidis generally does not ferment lactose. This difference makes lactose metabolism the distinguishing test between the two. The other sugars aren’t reliable differentiators for these species because both organisms commonly metabolize glucose and maltose (and sucrose isn’t a standard distinguishing test for them).

Carbohydrate use is a practical way to separate closely related Neisseria species. Neisseria lactamica can ferment lactose, while Neisseria meningitidis generally does not ferment lactose. This difference makes lactose metabolism the distinguishing test between the two. The other sugars aren’t reliable differentiators for these species because both organisms commonly metabolize glucose and maltose (and sucrose isn’t a standard distinguishing test for them).

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