s, choose Check for Updates. Homework-3* 1. Name five environmental conditions t

Question

s, choose Check for Updates. Homework-3* 1. Name five environmental conditions that would likely change or perturb the relative abundances of the members within a microbial community. 2. The enzymes catalase and peroxidase are not involved in fermentation or oxidative respiration. How can the presence of these enzymes tell you something about the oxygen requirements of a bacterium? 3. Name three cellular components involved in metabolism that are influenced by temperature changes. 4. Why psychotrophs are one major food spoilage concerns? 5. Rate S. epidermis, B. megaterium, and E. coli in order of their ability to resist thermal stress. Give an explanation why physical characteristics of these bacteria would give in these results. 6. Obligate anaerobic bacteria are often missed as the causal agents of infection in clinical diagnosis. Why is this so? Describe one method commonly used to culture these bacteria? 7. Discuss the role an Escherichia coli plasmid plays in creating a live recombinant vaccine, and why vaccinia virus is a preferred vector 8. Explain why biofilms are a concern in medical field? Due date:

Explanation / Answer

1. There are a number of environmental factors that would be leading to changes within the microbial community, which are:

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