Water supplies are treated with chlorine to kill pathogens. chlorine reacts well with many other chemicals and bacterial cells because it is a strong oxidant. however, legionella pneumophila can sometimes evade killing by residual chlorine. how does it do this? view available hint(s) water supplies are treated with chlorine to kill pathogens. chlorine reacts well with many other chemicals and bacterial cells because it is a strong oxidant. however, legionella pneumophila can sometimes evade killing by residual chlorine. how does it do this? legionella can detoxify chlorine by metabolizing it. legionella produces cations that bind up the negative chloride ions, thus inactivating them. legionella tends to be found in warm waters and in aerosols, both situations in which the chlorine readily evaporates and, thus, is in lower concentration in the water. legionella tends to form biofilms and infect other microbial cells as intracellular pathogens.

Legionella tends to form biofilms and infect other microbial cells as intracellular pathogens.

Explanation:

The Legionella genus of the bacteria is a group of gram-negative bacteria that can cause legionnaires disease.

The Legionella pneumophila is a species of this genus which can cause legion pneumonia. The bacteria lives in the freshwater and is resistant to chemical treatment like chlorine and the biocide treatment.

The reason for this resistance is since this species form a polysaccharide layer around the colony of the bacteria which is resistant to these treatments and also the bacteria prove parasitic to the protozoans which feed on these bacteria.

Thus, the selected option is the correct answer.

answer: - few nutrients

high pressure

low temperatures

explanation: 1. few nutrients:   open-ocean zone is located way far from the land, which is the main source of the essential nutrients.2. high pressure: pressure increases by 1 atmosphere for every 10 meters increase in depth.3. ample sunlight: a large fraction of the sunlight is reflected back to the atmosphere from the sea surface. 4. varying salinity: below the thermocline, the water is isolated from the atmosphere so the salinity remains stable over the year.5. low temperatures:   the temperature of open-ocean zone ranges from a low of -2°c to an average of 17°c

an organism's phenotype is the  form of a trait  that it  displays. for  flowercolor, a pea  plant  can  display  a phenotype of purple or white flowers. an organism's  genotype  is the alleles of a gene it contains. based on his data, mendel concluded that a phenotype can be  determined  by more than one  genotype.