Table of Contents
What is the usefulness of dilution plate method?
Dilution plating is a simple technique used to estimate the number of heterotrophic bacteria in an environmental sample. The technique can also provide an index by which differing environments or treatments can be compared.
What advantages does the streak plate method have over the spread plate method?
What advantage does the streak plate method have over the pour-plate method? The streak plate method does not require any additional media for dilution and only requires one plate for inoculation.
What is the advantage of using the standard plate count over other enumeration methods?
The correct answer: An advantage of the standard plate count is that it e. Determines the number of viable cells.
Why serial dilution method is important?
Serial dilution is used in microbiology to estimate the concentration or number of cells/organisms in a sample to obtain an incubated plate with an easily countable number of colonies. In biochemistry, serial dilution is used to obtain the desired concentration of reagents and chemicals from a higher concentration.
What are some advantages and disadvantages of the serial dilution agar plate technique?
The advantage of the serial dilution-agar plat-ing procedure is that the cell count represents only viable cells. The disadvantage of this method is that it requires an incubation period that precludes the ability to obtain immediate results.
What is the disadvantage of the streak plate technique of the pour plate technique?
What is a disadvantage of the streak plate technique? What is a disadvantage of the pour plate technique? Sometimes bacteria will clump together and look like a colony when they are not.
What are advantages of the quadrant streak plate method when compared to the pour plate method quizlet?
What is the advantage of using the streak plate method over the pour plate method? It is quick and takes less materials. You have a nutrient broth, an agar slant, and an agar plate with bacterial growth in or on each.
Why is streak plate method important?
Importance of Streaking: Streak plate technique is used to grow bacteria on a growth media surface so that individual bacterial colonies are isolated and sampled. Isolated colonies indicate a clone of cells, being derived from a single precursor cell.
What is the advantage of standard plate count?
What is the advantage of standard plate count over an indirect method of counting bacteria?
It allows you to take the average number of colonies per plate to calculate the CFU’s it minimizes the amount of human era and results. Why are plates with 25 to 250 colonies used for calculations?
What are the advantages and disadvantages of using direct counting methods?
Although rapid, a direct count has the disadvantages that both living and dead cells are counted. Only dense suspensions can be counted (>107 cells per ml), but samples can be concentrated by centrifugation or filtration to increase sensitivity. It is not sensitive to populations of fewer than 1 million cells.