Sulfide

Aeromonas hydrophila is a heterotrophic, gram negative, rod shaped bacteria surviving in both aerobic and anaerobic environment thus ferments both glucose and sucrose. These are ubiquitous bacteria meaning those appearing everywhere. These are also opportunistic organisms meaning that these attack on the organisms that are already weakened due to attack by bacteria or virus. Thus people with impaired immune system are more prone to attack by these organisms. Also young children are more easily affected

this report is to describe the various tests that helped develop a better understanding of the unknown microorganism in terms of the physiology, morphology, motility, and antimicrobic sensitivity it is characterized with. Indole production, hydrogen sulfide, and the colony morphology on the Eosin-methylene blue (EMB) plate, were the critical results that led to the conclusion that the organism was E. coli. In the indole production test, E. coli was one of two organisms,

In the year of 1920 a theory created by two different scientists was born, Russian Scientist/Chemist A.I.Oparin and an English Geneticist J.B.S both developed this theory known as ''The Primordial Soup Theory". This theory basically states that all life 3.8-3.5 billon years ago came from a tiny puddle filled with amino acids and elements from Earth's atmosphere. An experiment to test this theory was called Miller-Urey experiment courtesy of scientist Stanley Miller and Harold Urey. In this experiment

Cody Spenillo Professor VJ Rossmann Unknown Organism Assignment My unknown organism #11 is Escherichia coli (E. coli). E. coli belongs to the family Enterobacteriaceae. E. coli is Gram-negative, facultative anaerobe, and rod-shaped bacteria (bacillus). [1] E. coli is a single chromosome (haploid). E. coli has 4600 kilobases with about 4300 coding sequences and has around 1800 known E. coli proteins. 70% of its genes are monocistronic and 6% are polycistronic, roughly having the same amount of

The Piedmont is located between the Coastal Plain and the Mountain regions, in the middle region of the state. The origins of Piedmont are French, meaning “foot of the mountain”, because it’s located at the base of the Appalachians Mountains. From the western Coastal Plane to the mountains, the elevations range from about 300 feet to near 1,500 feet (Seaman 2006). The fall line, or fault zone, lies between the Coastal Plain and the Piedmont. The rivers that flow along the fault line are formed from

tuffs, are feldspar-phyric and contain 20-30% mica and amphibole. A package of felsic volcaniclastic rocks tentatively defined as fragmental rhyolites to dacites occur near the stratigraphic top of the volcanic pile and directly underlie massive sulfide and iron-oxide exhalative horizons. These highly siliceous rocks are mica and amphibole-poor, and occur as both quartzphyric fragments and tuffs. Felsic agglomerate rocks are common and sometimes show a dacite to rhyolite transition down stratigraphy

The purpose of this laboratory exercise was to perform tests necessary to be able to distinguish one microorganism from 10 others. Using a series of biochemical tests and characteristics, unknown #22 was concluded to be Pseudomonas aeruginosa. A dichotomous key was mapped out and used during this process. Using this provided guidance as well as organization as to what the result may be. Upon obtaining the unknown organism, it was important to make a streak plate of the bacteria on TSA. The purpose

back to 1988 journal contributions by Wächtershäuser [10,15] who hypothesized that iron sulfide chemistry under hydrothermal conditions played a central role in prebiotic chemistry (i.e., the ironsulfur world). The hypothesis rests on the notion that the oxidation of FeS to form pyrite in hydrothermal submarine vent conditions provided the electrochemical power for the reduction of CO2 to organic molecules. The ``pyrite-pulled [11]'' reaction as proposed by Wächtershäuser was as follows [10,15]:

“A mine would produce tons and tons of ground-up waste rock.” This gound-up waste rock is also known as Sulfide rock. A chemical reaction occurs when sulfide rock meets the surface, creating sulfuric acid. If sulfide rock is not isolated immediately from air and water, it may pollute streams and wetlands nearby. This water pollution has the potential to poison aquatic organisms in the polluted streams and wetlands

Gas hydrates (GHs) are compounds which are made up of water molecules and guest gas such as methane, carbon dioxide or hydrogen sulfide. GHs have a clathrate structure where the guest gas is trapped in the water molecules forming a cage. GHs appear to be solid like an ice but their physical properties differ from those of ice. After the first discovery of GHs in 1810, GHs have been considered a scientific curiosity since the process converts liquid water and gas guest into a solid. It was not until