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irina [24]
3 years ago
15

Coliform bacteria populations are routinely monitored in drinking water supplies, swimming pools, and at beaches because these b

acteria ______.
Biology
1 answer:
Viefleur [7K]3 years ago
7 0

Answer:

They are used as an indicator organism for pathogenic bacteria.

Explanation:

Coliforms are bacteria found in digestive tract of animals and humans. They are non-pathogenic, easy to culture and are used as an alternative indirect testing for presence of other microorganisms. Coliforms thrive in exact environmental conditions like other pathogenic bacteria, thus often used to indicate whether they are bacteria found in drinking water and swimming pools that might end up causing infections.

Therefore the existence of coliforms in water easily indicates feacal contamination.

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What role do producers play in establishing earth as a living planet
Drupady [299]
Producers are the group of organisms which are capable of using energy from the sun to produce their own food. All the other living organisms depend on the food produce by producers to survive. Both animals and humans feed on the plants and humans also eat animals which feed on plants. 
Without producers, there will not be any food in the world for other living organism to eat and survive.
4 0
4 years ago
You wish to determine the concentration of bacteria in a liquid sample. You measure the concentration by direct microscopic obse
Lelechka [254]

Answer:

The correct answer to the question above is "PLATE COUNT TECHNIQUE"

Explanation:

DIRECT MICROSCOPIC OBSERVATION is the method of estimating the number of microorganism using microscope. Samples to be estimated are placed on microscope slides which allow few cells in a small volume to be counted. Then, the value determined is used to estimate the total number of cells mathematically. It is only difficult to aee small cells which may affect precision.

VIABLE COUNT is the estimation of the living cells in a given sample.

PLATE COUNT TECHNIQUE is used to estimate the number of viable cells that are present in a given sample of actively growing or dividing cells based on bacteria cells found on agar plate. A sample to be counted is diluted in a solution that will not kill the microorganisms, this is done to enable accurate counting as only living bacteria will be counted.

6 0
3 years ago
What are some negative effects humans have on wetlands?
saw5 [17]
Wetlands are often drained in many regions to facilitate human use of the land. This happens a lot within the Pairie Provinces of Canada, where wetlands are drained to make way for agriculture. Wetlands are also often drained so as to use the land for building houses. Humans have also altered the flow of rivers through constructing dams and over-abstracting water. In many regions, depressions that would have been flooded in the past to form wetlands are no longer saturated. Wetlands also act as a 'sink' for many pollutants, and much of the pollution released into upstream rivers by humans may settle into the relatively stagnant waters of wetlands, to be absorbed into the sediments, where often it acts as a chronic pollutant, negatively effecting the aquatic ecosystem and water quality downstream. 
4 0
3 years ago
Reproduction by mitosis duplicates:A. chromosomesB. genesC. DNAD. all of the above
Montano1993 [528]

I do not understand why this was deleted, but Reproduction by mitosis duplicates all of the above, because all of these are in the gene being duplicated, the chromosomes, the gene itself, and the DNA.

Hope this helps, if not, comment below please!!!!

6 0
4 years ago
WILL MARK BRAINLIEST!!!!!!!Bisphenol-A (BPA), is an industrial chemical commonly added to disposable, plastic water bottles to
Nataly_w [17]

Answer:  By keeping plastic from being dumped in to the water, especially water in witch animals inhabit. also by using reusable cups instead of plastic bottles.

Explanation: Hope this helps!

6 0
3 years ago
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