1. Samples of a microbial colony obtained from the natural environment are not pure culture. They are mixed cultures because the environment consists of an array of microorganisms and not one specific organism. A sample obtained from the natural environment such as water or soil may contain several species of microbes that need to be further isolated to obtain a pure culture.
2. Isolation streak plate technique involves the dilution of the sample several folds and then streaking a small amount using a sterile inoculation loop on an agar plate in a zig-zag manner. This is done to obtain a pure culture of bacteria from a mixed population by separating the microprocessor. When the sample is diluted into a small concentration and is streaked onto agar placed, widely spaced, discrete colonies of bacteria can be observed. These isolated colonies can be further cultured to obtain pure cultures by picking and re-streaking them on fresh agar plates.
3. A microbial colony is considered a pure culture because it consists of single species. A single species of bacteria cluster and form an isolated colony on an agar plate which can be further plated on fresh medium.
3-1 - If your agar plate shows discrete uncluttered colonies then you have obtained an isolated colony. The following picture might help you to understand.
3-2. If you subculture isolated microbes into a sterile nutrient broth without any contamination, it will still be considered pure culture because it is single isolated species in a sterile aseptic environment of the nutrient broth.
3.3. A pure culture can become a mixed culture due to contamination. This could be caused by airborne bacteria if your conditions are not aseptic. Contamination is possible if the work area is not clean and sterile or if the glassware is not sterile. The contamination can transform your pure culture into a mixed culture and is hence problematic. So, it is very important to maintain a sterile and aseptic environment, glassware, and instruments.
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I can’t see the picture??
An expansive understanding of powers granted to the federal government best describes if loose constructionism.
Loose Constructionism is the judicial philosophy whereby the constitution is interpreted loosely, typically analyzing between the lines, to extract a that means. When practicing loose constructionism, justices will take an difficulty and look at the context of it, and then on the constitution. Justices that are described as free constructionists tend to favour Federal government power over that of states strength and rights. They tend to be labelled as liberals.The notion that the charter must be interpreted on this way originates from the concept that when writing the constitution, it was left deliberately vague so that it can be interpreted on this manner, to allow it to be flexible. In addition to this is the belief that the Founding Fathers might not have known how the modern world could have looked, so wanted the charter to be interpreted in the present day.
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Answer:
Affect heuristic
Explanation:
Affect heuristic is the phenomenon in which people decide by applying short cuts. The decision of a person influenced by their current emotions. When a person affects emotionally and psychologically it affects their decision making.
Emotions affect all decide whether it small or big does not matter. At last, individuals know that when he should try for new things and decisions. The person can make a decision when the mood is happy. The heuristic is a psychologically, mentally shortcut to take the decision quickly. This is only the way when you feel that your decision is influenced by your emotions.
<span>This is an example of respectful language. The use of this
language is gender unbiased and keeps away from stereotyping. Another instance
could be using the term flight attendant more willingly than stewardess and
server rather than waitress. These are instances of bias-free language alternatives.</span>
