Excessive interrogations and crosschecking from other family members was required of immigrants processed at angel island but not those processed at Ellis island.
<h3><u>Explanation: </u></h3>
The immigrants at Ellis Island were treated more fairly as compared to those that tried to immigrate through Angel Island. The interrogations at Ellis Island were small which were preceded by a minute’s worth of physical checking and evaluation, which needed to be passed to move onto the part where the inspector checked their documents and cross-questioned lightly.
The whole process took way less than it took on Angel Island. At Angel island, the physical evaluation process was the same, but they had to go through a gruelling amount and difficulty of questions, after which they were verified from any family members that already lived in America. Through Angel Island, the whole process of immigration took about months of preparation in advance, and any difference in the testimony of the family members and the applicant led to excessive difficulty in the procedure and risked deportation as well.
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:
A. Stay out of contaminated area and wait for professional responders to conduct formal decontamination
Explanation:
CERT stands for Community Emergency Response Team. The CERT members are trained volunteers who respond to any disasters which may impact any area. They are trained in disaster response skills, fire safety, medical operations, search and rescue, etc.
CERT member are volunteers who are trained and are not professionals.
In the context, CERT members are responding to a contaminated exposed area where they first followed the basic decontamination procedures to limit the risk of injury and exposure of the contamination. After following the basic procedures they should move out of the contaminated area and wait for the professional responders to further conduct the deconatmination processes.
Hence the correct option is (A)
Answer:
D
Explanation:
im just here to verify it but credits to answer above
