Because so few organisms can be successfully cultivated in the laboratory, studying only those that have been isolated often does not give an accurate picture of what actually happens in nature. Discuss why is that so and give an alternative approach to study the microbial community.
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Because so few organisms can be successfully cultivated in the laboratory, studying only those that have been isolated often does not give an accurate picture of what actually happens in nature. Discuss why is that so and give an alternative approach to study the microbial community.
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- What is the difference in microbial population from water sediment and neustonic source? A. Ratio of phototrophic and heterotrophic microbes. B. Ratio of anaerobic microbes to aerobic microbes. C. Ratio of heterotrophic and cellulolytic microbes. D. All statements are acceptable descriptions.Do all the microbes are cultivable in lab? Explain different techniques to study the microbial diversityIt is sometimes difficult to obtain pure cultures of microbes that grow naturally in mixed communities. True or False ?
- The use of culture-independent techniques has increased our understanding of microbial diversity without cultivation. Therefore, do microbiologists still need to attempt to grow new microbial species? Explain.Suppose you have joined to a lab lately for your undergraduate research and your supervisor isan environmental biotechnologist and interest includes various aspects of microbial diversity.Your supervisor wants you to figure out the following questions:I. What do you want to know about a newly discovered microbe? II. How do you screen that microbe for the presence of nucleic acid? III. What would be the assessment for finding the relationship between the new and alreadyexisting one?Compare and contrast the action of alcohols, halogens, and oxidizing agents in controlling microbial growth.
- What conclusions could be drawn from studying microbial habitats?In an in situ sample, describe the method that you woulduse to study the symbiotic interactions between various microbial species?You are responsible for the bioremediation of soil contaminated by jet fuel. Your coworker suggests you fertilize the soil with nitrogen and phosphorus to promote the growth of naturally occurring hydrocarbon-degrading microbes. However, you just read about a new mixture of microbes sold in a slurry with nutrients and a surfactant. What data do you need to collect to decide which approach would be best? How will you obtain these data?
- Microorganism growth in complex natural environments such as soils and waters can be utilized to carry out environmental management processes. Give one term for the process you would use to cleanse a marine oil spill and discuss at least 3 types thereof. Outline factors that would facilitate the success of the process you mentioned on 1. Discuss the use of indicator organisms in testing the quality of drinking water.The activated sludge process was developed from empirical knowledge and is now widely used for wastewater treatment. From a microbial point of view, i. Discuss how the ecology of different sectors of the process can be defined. ii. Design an experiment to understand how an efficient process differs from one with problems, such as sludge bulking.An aquatic microbe that can grow only near the surface of the water is probably which of the following? a chemotroph a phototroph a heterotroph an anaerobe a lithotroph