Answer:
she can make servings of lasagna with the amount left over
Explanation:
Given that:
a lunch lady has 4 pounds of lasagna left over.
If she makes 13 - pound servings;
to determine the amount of servings of lasagna can she serve with the amount left over; we have;
=
=
Hence she can make servings of lasagna with the amount left over
A microbe that grows only at the bottom of a tube of thioglycollate medium is probably a(n) <u>obligate anaerobes</u>.
Thioglycolate broth would be a versatile enrichment and differential medium that is largely used to ascertain the oxygen needs of bacteria. Obligate anaerobes can grow because of the oxygen-consuming properties of sodium thioglycolate inside the medium.
A variety of oxygen concentrations are produced in the medium across its depth as a result of this and the diffusion of even more oxygen as from broth's surface.
Because oxygen would be poisonous to obligate anaerobes, they congregate near the tube's bottom where another oxygen level is lowest.
To learn more about obligate anaerobes here
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Drug tolerance
Drug tolerance is a condition in
which a drug’s effect is reduced as an individual continues to use it. An
individual with a drug tolerance has to administer larger doses of the same
drug in order to obtain the same desired effect exhibited by the drug initially.
For the question given above, the phenomenon that Maurie is experiencing is called
drug tolerance.
Answer: There will be change in the tube in which E.coli will be incubated and there will be no change in the test tube in which Shigella is incubated
Explanation:
Lactose Fermentation Test is done to see which bacteria ferments lactose. pH and color indicator is attached to observe the change. The pH goes slightly down because of formation of Acid and due to this reason a color change is also seen during this test.
As E.coli typically ferments lactose so there will change in color and pH in the test tube incubated with E.coli, while there will be no change in the test tube incubated with Shigella.