The triple sugar-iron (tsi) agar test surveys the use of different carbohydrate fermentation pathways and the presence or absence of hydrogen sulfide production to differentiate among the different groups of what large and diverse group of bacteria?

The group is called  Enterobacteriaceae.

Explanation:

When lactose (or sucrose) is fermented, a large amount of acid is produced, which turns the phenol red indicator yellow both in bottom and in the slant (Escherichia, Klebsiella, Enterobacter).

If lactose is not fermented but the small amount of glucose is, the oxygen-deficient bottom will be yellow (remember that butt has comparatively more glucose than slant i.e. more media more glucose), but on the slant the acid produced (less acid produces in slant as media in slant is less) will be oxidized to carbon dioxide and water by the organism and the slant will be red (alkaline or neutral pH) (Shigella, Serratia, Salmonella, Proteus).

If no sugar is fermented, both the butt and the slant will be red (Pseudomonas. )

if H2S is produced, the black color of ferrous sulfide is seen (Salmonella, Proteus).

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answer:

the water molecules are transferred from the roots to the stem or top parts of the tall tree because of important properties of water which are adhesion, cohesion and capillary action. cohesion is the property of water molecules keeps water molecules in a combined state by sharing of bonds between them at the atomic level. adhesion allows the interaction of water molecules with other substances or substrate. adhesion will cause the attachment of water molecules to the wall of the vessel (xylem) of the plant. capillary action occurs when the adhesive force to the vessel wall is stronger than the cohesive force between water molecules. capillary action mimics the transfer of water from a tube or pipe. in this way water utilizes its property to transfer water from down to top level of the plant.