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How could the isolation of spore forming bacteria from a soil sample be facilitated?
Wiki User
∙ 13y ago
In a sponge! Lol
Wiki User
∙ 13y ago
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Why refrigerate urine?
The reason to refrigerate urine after collecting a sample is to avoid bacteria from forming in it. If a sample of urine will be taken to a lab within an hour of collecting it, then it does not need refrigerated.
What is the purpose of the streak for isolation?
By using streak plate technique to spread a clinical sample out on the surface of a growth medium individual types of bacteria can be isolated
What is total viable count of bacteria?
Total Viable Count of bacteria gives a quantitative idea about how much is in a sample. The calculation represents the number of colony forming units (cfu) per g ( or per ml).
What do you mean by enumeration of bacteria?
Enumeration of bacteria is counting the number of viable bacterial cells present in 1g or 1ml of a sample. The bacterial counts are usually expressed in CFU/g or CFU/ml. CFU-Colony Forming Units.
Who might use aseptic technique?
microbiologist,biologist and everyone that need to get a clean sample(prevent adding bacteria to the sample).
Why refrigerate urine?
The reason to refrigerate urine after collecting a sample is to avoid bacteria from forming in it. If a sample of urine will be taken to a lab within an hour of collecting it, then it does not need refrigerated.
What is the purpose of the streak for isolation?
By using streak plate technique to spread a clinical sample out on the surface of a growth medium individual types of bacteria can be isolated
What is total viable count of bacteria?
Total Viable Count of bacteria gives a quantitative idea about how much is in a sample. The calculation represents the number of colony forming units (cfu) per g ( or per ml).
What do you mean by enumeration of bacteria?
Enumeration of bacteria is counting the number of viable bacterial cells present in 1g or 1ml of a sample. The bacterial counts are usually expressed in CFU/g or CFU/ml. CFU-Colony Forming Units.
What is role of Cetyl trimethyl ammonium bromide in DNA isolation?
it act as as a cationic detergent for the isolation dna from the given sample
Why is the production of an isolation streak key to the identifcation of a bacterium grown in culture?
Isolation streaking was first introduced by Robert Koch as an improvement on the dilution method of isolation of bacterial cultures. Isolation is achieved by taking a minute sample from within one bacterial colony and putting it in a sterile medium so that only that organism will grow. The assumption here is that a bacterial colony has ways of ensuring that no other bacteria will grow within its colonies, primarily by the use of antibiotic compounds that it produces and secondarily by the fact that it will consume available medium before any other organisms can establish themselves. Contamination of a sample by bacteria other than the one desired can lead to improper identification and poor test results. Good isolation such as that provided by the isolation streak method addresses this concern, is cost-effective, and produces acceptable results.
Who might use aseptic technique?
microbiologist,biologist and everyone that need to get a clean sample(prevent adding bacteria to the sample).
Are bacteria rod shaped?
The natural water sample contains at least two types of bacteria. Bacilli Bacteria are the rod-shaped bacteria.
Why is nujol used?
to provide a protective layer or coating for the sample if the sample is a reactive sample. forming a protective layer or coating would prevent decomposition of the sample during the IR reading process.
Will isolated colonies always be in the second sector on the streak plate?
No. It depends on the number of bacteria present in the initial sample. If the number of bacteria in the initial sample are limited, you may get isolated colonies in the first streak. If the number of bacteria in the sample are high, it may take several streaks before the sample is diluted to the point where isolated colonies are evident.
What is the Excessive numbers of other bacteria in a sample that can interfere with counting coliform is called?
The excessive numbers of other bacteria in a sample that can interfere with counting coliform is called bacterial interference or bacterial overgrowth. This can lead to inaccurate results when trying to quantify coliform bacteria in the sample.
What could you conclude from a sample of natural water which contains a cluster of sphere-shaped bacteria but no rod-shaped or spiral-shaped bacteria as seen under a microscope?
At least two types of bacteria are contained in the natural water sample.
