Water sample turing yellow in color is positive for Acid and Bubble in Durham tube shows positive for Gas production in 24-48 hours positive presumptive test. ... Acid indicated by water sample turning yellow in color and indication of Gas production is by observing gas bubble in Durham tube within 24-48 hours test positive for coliform bacteria. ... Results A. sample C tested positive presumptive due to water color turning yellow with slight turbidity and production of gas indicated by gas bubble in Durham tube. Sample A and B showed no color change or gas production in Durham tube. ...

• Word Count: 1303
• Approx Pages: 5

In addition of H2O2 Patient G cells also show positive reaction forming oxygen and water which means it decomposes hydrogen peroxide into water and oxygen. ... Results: Color change Oxidase E.Coli No color change Negative Pseudomonas Aeruginosa Changed to Blue Positive Observations: After adding oxidase reagent Pseudomonas Aeruginosa prodeuces cytochrome c oxidase as indicated by the blue color; however, E.Coli do not produce cytochrome c oxidase. ... This color change is an indication that the organism produces cytochrome c oxidase as part of its ETC. ... Results: After adding reagent to ...

• Word Count: 686
• Approx Pages: 3
• Grade Level: High School

It is also known that meteorites carry water, in the form of ice, and many carbon containing compounds. ... They heated amino acids without water and formed long protein chains. As water was added and the mixture cooled down, small microspheres were formed. ... He filled his notebooks with records of height, weight, color, claw size, tail length, and other characteristics among members of the same species. ... It is a lot harder for birds to see, catch, and eat moths that blend in with the color of the tree bark than it is for them to spot moths whose color makes a strong contrast with the tre...

• Word Count: 2685
• Approx Pages: 11
• Grade Level: High School

The word cacao is derived from the Aztec word xocolatl, from xococ,meaning bitter and atl meaning water. ... The bacteria oxidizes the ethanol to acetic acid and then to carbon dioxide and water. ... Chocolate acquires its rich, dark color and flavor at this time. ...

• Word Count: 1886
• Approx Pages: 8
• Grade Level: Undergraduate

Slime molds, which are members of class Acrasiomycota, are multicellular heterotrophs that may live in fresh water, damp soil, and rotting vegetation; they are considered to be asexual; if sexuality is present, it is quite rare. ...

• Word Count: 3806
• Approx Pages: 15
• Grade Level: Undergraduate