Question

HOOH HOOH Hoon HOCH ADP ATT SDH DH. NAD BEHR NAD HOCH HOCH нсон ت HOCH HOOH HOOH R-COOH HOOH HOOH Fructonase door Mula niti Dehydrogenase HOOH HOOH Habove BADP HOCH TP 10 Name the D-Fructose-6-P Pyruvate Organic Acid (lowessphi D-Fructose Mannitol Glycolysis Fermentation Organic Acid Powers pH) medium used in the test indicated in the above formula. eosin methylene blue agar nutrient broth bile esculin agar mannitol salt agar McConkey agar nutrient agar

Answer 1

The correct option is Mannitol salt agar.

Mannitol salt agar is a differential and selective media as it promotes the growth of bacteria that can ferment mannitol (substrate) and tolerate high salt concentration (NaCl). This media also contain an indicator called as phenol red (pH indicator). This indicator turns yellow because of the production of acid that lowers the pH.

In the given recation, mannitol is the substrate and it leads to the production of an organic acid that will lower down the pH and turn the color of phenol red to yellow which gives a positive result.

Other options are incorrect because they do not contain high concentration of salt and mannitol as a substrate in their medium.