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Microbiology

Explain the characteristics of the bacterial family that is able to symbiotically-fix atmospheric nitrogen.

ii) Identify some of the functions that microbes have in the environment.

iii) Bdellovibrio was suggested to remove E. coli from recreational waters in the 1970s. What do you think the results of these experiments were and why?

iv) What microbes generally cause spoilage of: meat, poultry, eggs, fruits and vegetables?

v) What are the functions of the following pharmaceuticals: growth hormone, human rennin, interferons, tissue plasminogen activator, and interleukin-2.

Solution Preview

There are several bacteria that are capable of fixing nitrogen; however, Rhizobium family is a well-known family that forms a symbiotic relationship with plants to fix atmospheric nitrogen. Bacteria of this family are Gram-negative and rod-shaped. They can reproduce by budding at one pole of the cell. They are motile due to peritrichous flagella, which can number from one to six. Species in this family produce slime composed of extracellular polysaccharides.

Bacteria are vital in the recycling of many vital elements that make up all living systems on Earth, such as oxygen, ...

Solution Summary

This solution answers questions about bacteria in the environment and their jobs. It discusses Bdellovibrio and E. coli, which microbes are responsible for the spoilage of food, and the functions of pharmaceuticals, such as growth hormone, human rennin, interferons, tissue plasminogen, and interleukin-2.

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