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Answer :
The options
A. Both organisms will grow since they are both ubiquitous of 20.
B. Neither organisms will grow beacause 75% salt inhebits at organisms.
C. The salt inhibits the growth of E.coli which is not a halophyte, but S.epidermidis grows.
D. The S epidernidis will not grow since it must exist at as a pure cuture the E.coli will grow."
Answer: C.
Agar is characterised by Escherichia coli not growing and Staphylococcus epidermidis growing and observing colorless to pink colonies.
Explanation:
This agar a differential medium for mannitol fermentors,
It encourages the growth of a group of certain bacteria while inhibiting the growth of others.
Note: an acidic by product is formed if an organism can ferment mannitol, that will cause the phenol red in the agar to turn yellow.
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Answer:
The options
A. Both organisms will grow since they are both ubiquitous of 20.
B. Neither organisms will grow beacause 75% salt inhebits at organisms.
C. The salt inhibits the growth of E.coli which is not a halophyte, but S.epidermidis grows.
D. The S epidernidis will not grow since it must exist at as a pure cuture the E.coli will grow."
The CORRECT ANSWER IS C.
C. The salt inhibits the growth of E.coli which is not a halophyte, but S.epidermidis grows.
Explanation:
Mannitol Salt Agar is known for its highly selective property. This explains why it is mostly used for isolation of Staphylococcus which ferments mannitol (for nutrient-carbohydrate). Staphylococcus unlike any other bacteria such as (E. Coli etc.) is resistant to sodium chloride even at a high concentration amount for the salt.
