Why do you think most bacteria grown in labs are mesophiles with a pH optimum for growth near 7.0, do you believe that it is representative of bacteria on earth? What problems would this cause.
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Why do you think most bacteria grown in labs are mesophiles with a pH optimum for growth near 7.0, do you believe that it is representative of bacteria on earth? What problems would this cause.
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- What is G+C content of a bacteria? How it can be determined? Why it is not safe to assume that microorganisms with same G+C content belong to same species? How G+C content data is taxonomically valuable?Why is it not safe to assume that two microorganisms with the same G + C content belong to the same species? In what ways are G + C content data taxonomically valuable?It is 0.4 um in length, but that is all you know. What could you do to determine if this microbe was a bacteria or an archaea?
- How would you dilute a stock solution of bacteria with an OD600 of 2.5 down to a solution that has an OD600 of 0.25?Pseudomonas bacteria have porin proteins, are resistant to the chemical triclosan, and survive and can even multiply in quaternary ammonium compounds. True or False?A certain medium has the following composition: Glucose 15 g Yeast extract 5 g Peptone 5 g KH2PO4 2 g Distilled water 1,000 ml Tell what chemical category this medium belongs to, and explain why this is true. How could you convert Staphylococcus medium (table above) into a non-synthetic medium? a. What kind of medium might you make to selectively grow a bacterium that lives in the ocean? One that lives in the human stomach? Why are intestinal bacteria able to grow on media containing bile?
- Why do cells need to be kept in the freezing devices first then transferred to liquid nitrogen storage in crypto preservation? In addition, why are antibiotics not used in the cell freezing media? Why FBS concentration higher than 10% (10% is the standard concentration in complete growth media) is recommended in cell freezing media?Why is E. coli O157:H7 an organism of concern in contaminated foods? The strain is represented as O157:H7. Which particular “parts” of the bacterial cell do the “O” and “H” refer to?When resources are limited for a bacterium, why would the bacterium be willing to spend energy to group translocate glucose?
- What is the range of salinities over which Halobacterium NRC-1 is able to survive? Why specifically does Halobacterium NRC-1 not survive at higher or lower salt concentrations? My answer The range in which Halobacterium NRC-1 would able to survive is between 234 ppt and 400 ppt. Halobacterium NRC-1 does not survive in lower salt concentrations because......What is the definition of the term bioremediation? Which elements can a bacterium obtain from petroleum? Why are petroleum products naturally resistant to metabolism by most bacteria?Besides being able to tolerate a range of pH some bacteria change their environment by producing acid or alkali substances. How would you use microbiological media to determine a change in the pH of culture media due to metabolic activities of bacteria? GIVE DETAILED ANSWER PLEASE