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Physical and chemical control of growth and viability

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Present and discuss the differences and similarities in the microbial metabolic and environmental requirements for growth for E Coli and HIV. The focus should be on the effect of environmental factors on growth for both. Growth criteria for E Coli and HIV should also be covered

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In order to answer this, one should firstly consider the key differences between E. coli and HIV.

E. coli is a Gram negative bacterium, a single celled organism which reproduces by cellular division, whereas HIV is a virus which infects and hijacks a host organism's T-cells and uses its enzymes to create more viruses as a means of replication. As a result, the growth requirements can be drastically different.

Since E. coli is a bacterium, it must find nutrients to meet its metabolic needs. As a pathogen, it generally acquires this from the environment of the GI tract in humans in the form of readily available glucose. As a facultative anaerobe, the organism generally ferments ...

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The expert examines the physical and chemical controls of growth and viability.

See Also This Related BrainMass Solution

Physical and chemical control of growth and viability (CASE)

In the module 3 case assignment you will explore bacterial growth and methods used to measure the growth of microbes. After you have read the information in the background readings and home page you should prepare a paper addressing the topics below:

1. Discuss the four phases of the bacterial growth curve.

2. Explain two methods used to measure microbial growth.

3. Discuss two methods used to control microbial growth.

The book Antibacterial Agents: Chemistry, Mode of Action, Mechanisms of Resistance and Clinical Applications on your ebrary bookshelf will be an important place to begin your research on this topic.

Case Assignment Expectations

Length: Case Assignment Module assignments should be at least 2-4 pages (400-800 words) in length.

References: At least two references should be included from academic sources (e.g. peer-reviewed journal articles). Required readings are included. Quoted material should not exceed 10% of the total paper (since the focus of these assignments is critical thinking). Use your own words and build on the ideas of others. When material is copied verbatim from external sources, it MUST be enclosed in quotes. The references should be cited within the text and also listed at the end of the assignment in the References section (preferably in APA format).

Organization: Subheadings should be used to organize your paper according to question

The following items will be assessed in particular:

Relevance (e.g. all content is connected to the question)
Precision (e.g. specific question is addressed. Statements, facts, and statistics are specific and accurate).
Depth of discussion (e.g. present and integrate points that lead to deeper issues)
Breadth (e.g. multiple perspectives and references, multiple issues/factors considered)
Evidence (e.g. points are well-supported with facts, statistics and references)
Logic (e.g. presented discussion makes sense, conclusions are logically supported by premises, statements, or factual information)
Clarity (e.g. writing is concise, understandable, and contains sufficient detail or examples)
Objectivity (e.g. avoid use of first person and subjective bias)

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