What is the difference between assimilatory nitrate reduction and denitrification? Which reaction is performed by many microbes, and which is a more specialized metabolic capability?
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What is the difference between assimilatory nitrate reduction and denitrification? Which reaction is performed by many microbes, and which is a more specialized
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- What is one difference between fermentation and anaerobic respiration? Since neither requires oxygen, why would a microbe select one of these versus the other? Name a specific microbe which uses fermentation and a specific microbe which uses anaerobic respiration.https://courses.lumenlearning.com/microbiology/chapter/controlling-microbial-growth/ Read this Article about Controlling Microbial Growth and answer the following questions: Which is most effective at removing microbes from a product: sanitization, degerming, or sterilization? Explain. What are two possible reasons for choosing a bacteriostatic treatment over a bactericidal one? Name at least two factors that can compromise the effectiveness of a disinfecting agent.If two cultures of a facultative anaerobe were grown under identical conditions except that one was exposed to oxygen and the other was completely deprived of oxygen, what differences would you expect to see between the two cultures? (What metabolic pathway would be occurring in each? Why?)
- Explain the difference between assimilatory nitrate reduction and dissimilatory nitrate reduction.Microorganisms are needed in wastewater treatment facility to do the actual breakdown and removal of nutrients and organic matter in the waste matter. One day, the employee who is in-charge of the facility notice that as the time goes by after the wastewater was loaded into the medium the metabolic activity of the microbe cease to increase and remain stable instead. Within the context of our discussion, what could be the possible explanation for the employee’s observation?Is the autoclaving process absolute in killing all microorganisms? If not, what are the factors that hinder effective sterilization through autoclaving? When can you say that the sterility of an instrument is compromise?
- 1.). a.) What particular pathways or enzymes appear distinct for sulfate reducing bacteria in order to harness energy (create ATP)? b.) What interesting structures or unique characteristics allowed sulfate reducing bacteria to solve physical and/or chemical challenges/problems in conserving energy?Name two enzymes that are present in obligate aerobes but lacking in obligate anaerobes. What is the function of each enzyme?placing bacteria at ultracold temperatures is as effective at killing microbes as the use of dry heat in incineration. is is true/false?
- If the result of an unknown bacteria is “poor growth” and “red growth,” can this result be interpreted as “organism does not ferment mannitol?” Explain why or why not. If the result of an unknown bacteria is “good growth” and “yellow growth,” is the unknown bacteria more likely Staphylococcus aureus or Staphylococcus epidermidis?When it comes to controlling microbial growth in microbiology lab, why is autoclaving so vital? What does autoclaving kill (on a microbial level) and how does it do this (mechanism of action)?E. coli, a facultative anaerobe, is grown for 24 hours on the same type of solid medium, but under two different conditions: one aerobic, the other anaerobic. The size of the colonies would bea) the same under both conditions.b) larger when grown under aerobic conditions.c) larger when grown under anaerobic conditions.