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seraphim [82]
3 years ago
7

A hypothetical bacterium swims among human intestinal contents until it finds a suitable location on the intestinal lining. it a

dheres to the intestinal lining using a feature that also protects it from phagocytes, bacteriophages, and dehydration. fecal matter from a human in whose intestine this bacterium lives can spread the bacterium, even after being mixed with water and boiled. the bacterium is not susceptible to the penicillin family of antibiotics. it contains no plasmids and relatively little peptidoglycan. adherence to the intestinal lining by this bacterium is due to its possession of ________.
Biology
1 answer:
ivann1987 [24]3 years ago
5 0

The bacterium is not susceptible to the penicillin family of antibiotics. it contains no plasmids and relatively little peptidoglycan. Adherence to the intestinal lining by this bacterium is due to its possession of a capsule.

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<em>Lac </em>structural genes are a part of<em> Lac</em> operon. The <em>Lac </em>operon consists of three, structural genes,an operator and a promoter.The product of Lac operon is involved in the conversion of disaccharide lactose into glucose and Galactose.

Lactose and its analogs are inducers of<em> Lac </em>operon. So, the structural genes are best expressed in presence of Lactose. Glucose and galactose are repressors of lac gene so the genes are repressed in presence of glucose.

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