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Because a colony on plate could be formed by more than one cell.

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What is the standard for aerobic plate count?

The standard for aerobic plate count, also known as aerobic colony count or Total Viable Count (TVC), is typically expressed in colony-forming units per milliliter (CFU/ml) or per gram (CFU/g) of sample. The acceptable limits can vary depending on the type of product or industry, but generally, lower counts indicate better hygiene and quality of the sample.


What is the difference between standard plate count and total plate count?

The white blood cell count and differential determine the number of white blood cells and the percentage of each type of white blood cell in a person's blood. These tests are included in general health examinations and help investigate a variety of illnesses, including infection, allergy, and leukemia. The white blood cell count provides a clue to the presence of illness. White cells protect the body by fighting infection and attacking foreign material. When extra white cells are needed, the bone marrow increases production. There are five types of white cells, each with different functions: neutrophils, lymphocytes, monocytes, eosinophils, and basophils. The differential reveals if these cells are present in a normal distribution, or if one cell type is increased or decreased. This information helps diagnose specific types of illness. Conditions or medications that weaken the immune system, such as AIDS or chemotherapy, cause a decrease in white cells. The white cell count detects dangerously low numbers of white cells. Recovery from illness can be monitored by the white cell count. Counts continuing to rise or fall to abnormal levels indicate a worsening condition; counts returning to normal indicate improvement.


Do both the spread-plate and pour-plate method in a experiment produce similar bacterial counts or are they vastly different?

Both Spread-plate and pour plate method don't give the same results. Because in the case of spread plate method the inoculmn used for inoculation can't be spread in a exact volume. A little inoculmn remains stick with the spreader after spreading. On the other hand, in pour plate method it doesn't happen. So mostly, through comparing the counts by both methods, less counts are obtained in spread plate method. I am Working as a Sr. Microbiologist in a Biotech company


What are the sources of error when performing a viable plate count?

Sources of error in viable plate counting include inaccurate dilutions leading to over or underestimation of colony forming units, uneven distribution of bacteria on the agar plate causing inaccurate colony counts, contamination from environmental sources impacting the results, and variability in the incubation conditions affecting bacterial growth rates.


Why is the viable plate count technique considered to be an indirect measurement of cell density whereas the turbidimetry method is not a count at all?

the viable plate technique refers to the number of viable cells in the plate. it called indirect method as some of cells that contribute to cell density may not viable. meanwhile turbidimetric method only count the cell density of microbial cell population, not count the number of cell. it monitored the changes of population by measuring the opacity of growth medium which will become more opaque as the cell numbers increase.

Related Questions

What causes high Aerobic plate counts in food?

inappropriete cleaning and sanitation of equipments and utensil may cause high aerobic plate count.


How do you compute colony forming unit per plate?

1.Direct Microscopic Counts (DMC) for both viable and nonviable cells


How do you measure bacteria in a petri dish?

When bacteria is grown in an Agar plate, one quantitative method to measure growth is using a counting chamber. Another method is using viable plate counts.


What does not counts as a plate appearance in baseball?

When you do not go to the bat.


What is the standard for aerobic plate count?

The standard for aerobic plate count, also known as aerobic colony count or Total Viable Count (TVC), is typically expressed in colony-forming units per milliliter (CFU/ml) or per gram (CFU/g) of sample. The acceptable limits can vary depending on the type of product or industry, but generally, lower counts indicate better hygiene and quality of the sample.


What if your instructor asks you to determine the number of organisms in a water sample observation of your dilution plates reveals?

I think you would eliminate plate counts that are not between 30-300 colonies. <30, because its too few to count, >300 too numerous to count.


What is the difference between standard plate count and total plate count?

The white blood cell count and differential determine the number of white blood cells and the percentage of each type of white blood cell in a person's blood. These tests are included in general health examinations and help investigate a variety of illnesses, including infection, allergy, and leukemia. The white blood cell count provides a clue to the presence of illness. White cells protect the body by fighting infection and attacking foreign material. When extra white cells are needed, the bone marrow increases production. There are five types of white cells, each with different functions: neutrophils, lymphocytes, monocytes, eosinophils, and basophils. The differential reveals if these cells are present in a normal distribution, or if one cell type is increased or decreased. This information helps diagnose specific types of illness. Conditions or medications that weaken the immune system, such as AIDS or chemotherapy, cause a decrease in white cells. The white cell count detects dangerously low numbers of white cells. Recovery from illness can be monitored by the white cell count. Counts continuing to rise or fall to abnormal levels indicate a worsening condition; counts returning to normal indicate improvement.


Do both the spread-plate and pour-plate method in a experiment produce similar bacterial counts or are they vastly different?

Both Spread-plate and pour plate method don't give the same results. Because in the case of spread plate method the inoculmn used for inoculation can't be spread in a exact volume. A little inoculmn remains stick with the spreader after spreading. On the other hand, in pour plate method it doesn't happen. So mostly, through comparing the counts by both methods, less counts are obtained in spread plate method. I am Working as a Sr. Microbiologist in a Biotech company


When does an at bat not count?

Hit by the pitch, sacrifice, base on balls and I believe catcher's interference


How do i read Aerobic plate count?

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There are other techniques for counting bacteria such as a direct microscopic count and turbidity Why is the standard plate count preferrend for food?

The standard plate count method is preferred for counting bacteria in food because it provides a simple and reliable way to determine the number of viable bacteria present. It allows for the cultivation of various types of bacteria which may be present in the sample, providing a more accurate representation of the bacterial population. Additionally, the standard plate count method is well-established, widely accepted, and can be easily standardized for regulatory purposes in the food industry.


What is standard plate count definition?

It is referring to heterotrophic plate numbers in water samples.