what is the effect on humans when food is contaminated with listeria on it?

Md Ariful Islam

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Md Ariful Islam

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When food is contaminated with listeria, it causes the bacterial infection called listeriosis. Through the bloodstream, the bacteria enter different organs, predominantly accumulating in the spleen and liver. In these organs, bacteria invade macrophages causing their death. The survived macrophages multiply and spread through the bloodstream to the organs and tissues of the body. Listeria infects the central nervous system and can cause meningitis and encephalitis.

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Is it possible to plate a contaminated BHI solution on a blood agar ?

Yes, streak it out. BHI is a very rich medium, so it will develop very high counts.

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what is the appearance that listeria has when food is affected?

When food is affected, Listeria is presented by rod-shaped bacteria that occur individually or may form short chains.

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what are the environment that encourages growth for listeria?

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False

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False

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<h3 class="editor-header">Explain the effect if a burette is contaminated with a base solution</h3>

The acid burette is contaminated with a basic solution. If acid burette is contaminated with a basic solution, the concentration of inserted acid will be reduced. Therefore, this will lead...

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The donation of electron density through sigma (σ) bonds of a molecule is called the: (1) resonance effect (2) inductive effect (3) steric effect (4) nucleophilic effect

(b) inductive effect

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