help on question 4 1. In addition to nutrients Lowenstein-Jensen (L-J) medium (used to cultureMycobacterium species including M. tuberculosis) contains malachite green (a cytotoxin)and antibiotics (penicillin and nalidixic acid) which inhibit both Gram negative andpositive bacteria. This would be an example of what kind of media?2. What is it about Mycobacterium (compared to other bacteria) that allows for L-J mediato even work (e.g, to be useful for this purpose)?3. What is it about blood agar that makes it useful for discriminating pathogenic strains ofStreptococci from non-pathogenic (normal flora) strains? Be specific.4. Which media discussed in this exercise would be best for checking a water sample forpotential E. coli contamination from sewage? Explain your answer.5. Which media discussed in this exercise would be best for checking a food sample for thepresence of Staphylococcus aureus, a common cause of food poisoning? Explain youranswer.

A culture medium otherwise called a growth medium is a liquid or solid medium to support the growth…

Answered: 4. Which media discussed in this…

4. Which media discussed in this exercise would be best for checking a water sample for potential E. coli contamination from sewage? Explain your answer.

Biology: The Dynamic Science (MindTap Course List)

4th Edition

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Chapter26: Prokaryotes: Bacteria And Archaea

Section: Chapter Questions

Problem 4TYK: At the health center, a fecal sample was taken from a feverish student. Organisms with corkscrewlike...

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Concept explainers

Tissue regeneration & repair

Tissue regeneration involves the restoration of tissue components by regrowth of damaged tissues. In contrast, tissue repair involves patching of injured tissue rather than restoring it. It is the proliferative capacity of the cells that decides the amount of regeneration against the repair that would occur in the tissue. Both regeneration and repair depending on the duration of the injury and response to the inflammation.

Question

help on question 4

1. In addition to nutrients Lowenstein-Jensen (L-J) medium (used to culture
Mycobacterium species including M. tuberculosis) contains malachite green (a cytotoxin)
and antibiotics (penicillin and nalidixic acid) which inhibit both Gram negative and
positive bacteria. This would be an example of what kind of media?
2. What is it about Mycobacterium (compared to other bacteria) that allows for L-J media
to even work (e.g, to be useful for this purpose)?
3. What is it about blood agar that makes it useful for discriminating pathogenic strains of
Streptococci from non-pathogenic (normal flora) strains? Be specific.
4. Which media discussed in this exercise would be best for checking a water sample for
potential E. coli contamination from sewage? Explain your answer.
5. Which media discussed in this exercise would be best for checking a food sample for the
presence of Staphylococcus aureus, a common cause of food poisoning? Explain your
answer.

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