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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Answer:
Usually a felony (a crime involving violence)
Explanation:
A felony can lead up to 1 or more years in prison
Answer:
Emotional consideration
Explanation:
There was emerging many of the emotions when you are through your treatment and these emotions are anxiety depression and frustration. There would be some communication gap or trouble arises between the people and relationship face trouble.
There are some way through that people overcome the obstacle:
- To communicate with your partner
- Managing family and friends
- To help you making decision
- The third-party collaboration
The answer to this question is <span>Interactivity
in technological context, interactivity refers to a dialog that happens between a human being with a technology.
Due to development of technology that we experience today,many technologies already developed a feature that allow it to detct sounds and cross referencing it to ther data base, allowing to interraction via taking by the consumers.</span>
E) first and last months rent required in advance
