Answer:
decomposition
Explanation:
Decomposition is the process by which bacteria and fungi break dead organisms into their simple compounds, Bacteria/fungi secreting enzymes out of their cells into the soil or dead organism. The enzymes digest the organic material. This is known as extracellular digestion as it happens outside the cells.
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:
selective attention is very important because something so serious like that injury, when brushed off can spread and cause more damage and issues to your body mentally or physically. he should have payed more attention, because he would have noticed the injury and got it dealt with rather than brushing it off and continuing. the pain became worse as he put more pressure on it
Explanation:
Answer:
They were left out because the whole purpose of the american revolution was for the colonists to be free from the british, but the Africans were still asked to fight in the wars, and they were still held as slaves until the civil war occurred.
Answer:
Keeps all of us safe from trouble.
Explanation:
Laws are important so they can set limits to what can be done, how much it can be done, and what cannot be done. This keeps us safe from killing, being killed, robbing, breaking road rules, using weapons, etc. Laws may limit when we can use self-defence. It's to keep us all safe!
