Can you tell IF the pasteurization process is working in this milk producing plant? How can you explain this by looking at the bacterial plate growth? How can you tell it is or is not working
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- If the inoculation of yeast during the process of vinegar making are not done, can we still produce vinegar? what will happen in the process?If the steps involving yeast inoculation are not done in vinegar, what would happen to the process? Would you still be able to produce vinegar?What method of bacterial measurement does this graph represent? Is it considered direct, or indirect? What phase of the growth curve can NOT be measured using this method?
- Do Gram-negative bacteria grow on PEA agar? If not, what prevents their growth?Noah wanted to transfer Staphylococcus aureus from a broth to an agar plate. He picked up the broth culture, removed the cap, and flamed the mouth of the tube. He inserted an inoculating loop to obtain a bacterial sample. Then, he flamed the mouth of the tube and replaced the cap. Noah opened the lid of a labeled agar plate diagonally and used the loop to streak the surface of the agar. After closing the lid, he flamed the loop in an incinerator and put it back in its container. The plate was incubated upside down for 24–48 hours. What did Noah do wrong in this transfer? a. He did not use the transfer tool correctly. b. He did not handle the culture tube correctly. c. He did not handle the agar plate correctly. d. He used the wrong tool in transfer.what is the physical characteristics of this streak plate? Look at a single colony on a streak plate and look for special physical characteristics such as: motility, possible presence of endospores and/or capsule, culture color?
- In the preparation of a bacterial smear, why is there a need to fix the bacteria to the slide? Aside from passing the slide over a flame, what are the other ways of fixing the bacteria to the slide?After inoculating and incubating an agar slant from a pure broth culture of a bacterial species such as E. coli, which of the following would indicate an unsuccessful aseptic transfer? (Choose ALL that apply) a - There is fungal growth in the original broth culture tube. b- There is too much growth on the agar slant. c- There are colonies of similar morphology on the slant. d - There are red, yellow, and white colonies on the slant. e - There is no growth on the slant.If all the Petri dishes/agar plates grew bacteria, including the control, what do you think could be the reason?
- What is the purpose of the pour plate technique? If a pure culture is used to inoculate the plate, why are some colonies bigger than others?In a bacterial culture on an agar plate, what is a zone of inhibition? An area where the growth of bacteria is increased compared to the rest of the agar plate An area where the growth of bacteria is prevented or reduced compared to the rest of the agar plate An area where the growth of bacteria is not affected compared to the rest of the agar plate An area where the the agar becomes contaminated with moldIf you were using the quadrant streak plate method to plate a very dilute broth culture ( with many fewer bacteria the broth used for the plate picture here), would you expect to see single, isolated colored in quadrant 4 or quadrant3? Explain your answer.