Winogradsky Column

 

– What is the Winogradsky column and how you made it.

– Results.

Talk about:

a) Cyanobacteria growth. At least mention one Genus. Description and equation of the photosynthesis.

b) Green sulfur bacteria. At least mention one Genus.Description and equation of the photosynthesis.

c) Purple sulfur bacteria. At least mention one Genus.Description and equation of the photosynthesis.

 

 

Sample Solution

Winogradsky Column

The Winogradsky column is a simple device for culturing a large diversity of microorganism. Invented in the 1880s by Sergei Winogradsky, the device is a column of pond mud and water mixed with a carbon source such as newspaper (containing cellulose), blackened marshmallows or egg-shells (containing calcium carbonate), and a sulfur source such as gypsum (calcium sulfate) or egg yolk. Incubating the column in sunlight for months results in an aerobic/anaerobic gradient as well as a sulfide gradient. These two gradients promote the growth of different microorganisms such as Clostridium, Desulfovibrio, Chlorobium, Chromatium, Rhodomicrobium, as well as many other species of bacteria, cyanobacteria, and algae.

be a professor of Jurisprudence (Mitzman). While working as a professor at a variety of universities throughout Germany, the ideologies of his parent’s began to express themselves in Weber’s actions. His interest in politics, which stemmed from his father’s work, was aligned with the unchallenged discipline that he had learned from his puritan mother. He married Marianne Schnitger while he was a professor and although they would never have children together, her influence would be vitally important to the recognition of his work after he died (Sharlin 111). In fact, his works did not receive international recognition until she had many of his writings published and she even wrote his biography (Sharlin 112).

Like most sociologists, Max Weber studied the aspects of society that he had observed the most in his own life and the facets of life that he found most interesting. As a result, Weber’s main focus centered on an idea called social action, which is the “actions people take in response to others – with emphasis on the forces that motivate people to act” (Ferrante-Wallace 20). Additionally, his role in politics led him to analyze many elements concerning political systems and the methods that governments use to establish standards (Roth 307). However, Weber did more than simply add to the knowledge concerning these topics, he also changed the way that these sociological aspects would be measured. Weber stated that he was “a partisan in methodological matters,” meaning that he studied sociology in the same was that a chemist might study reactions: in an objective and scientific manner (Roth 306). Some of the most important topics unveiled by Weber are his definitions of bureaucracy, authority, oligarchy, and rationalization (Elwell). For each of these terms, he outlined its meaning, components, and implications for life, which are still being discussed and used today.

Ultimately, Weber’s influence on sociology is immea

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