Most of the tests you performed involved a color change to the media or the bacterial cells due to a change in pH and the presence of a pH indicator. What metabolic process was most often involved in the observed color changes?

Acid production

Explanation:

Most bacteria make by-products during multiplication. Bacteria that undergo lactic acid and acetic acid production via a process called fermentation will produce an acid. If there is an indicator in the media that would react with these acids the color change will appear. This will give the scientist an indication that a by product has been made and the pH of the by product is low.

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.