leuconostoc species are streptococcus-like bacteria used in the dairy and pickling industries that have recently caused opportunistic infections in humans. the need to make the laboratory identification is compounded because these bacteria are intrinsically resistant to vancomycin. which characteristic is most helpful in separating leuconostoc species from other streptococcus-like organisms?

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04-11-2022
Biology

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leuconostoc species are streptococcus-like bacteria used in the dairy and pickling industries that have recently caused opportunistic infections in humans. the need to make the laboratory identification is compounded because these bacteria are intrinsically resistant to vancomycin. which characteristic is most helpful in separating leuconostoc species from other streptococcus-like organisms?

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MubeenaD MubeenaD · Answer 1 · 2022-11-08T07:33:11-05:00

The characteristic that is most useful in distinguishing Leuconostoc species from Streptococcus-like ones is the (A) gas from glucose molecules present in the MRS broth.

The question is incomplete. The complete question is:-

Leuconostoc species are similar to the Streptococcus species of bacteria. The latter are utilized in dairy as well as pickle industries that are responsible for causing opportunistic infections in humans recently. The urge to make the laboratory identification is compounded since these type of bacteria possess intrinsic resistance to vancomycin. Which of the following characteristic is most useful in distinguishing Leuconostoc species from Streptococcus-like bacteria?

(A) Gas from the glucose present in the MRS broth,

(B) Activity of Leucine aminopeptidase (LAP),

(C) Capability to survive in 6.5% NaCl concentration (salt tolerance),

(D) Capability to survive at a temperature of 10°C.

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