Answer:
c) human beings coordinate their wants and desires.
Explanation:
Economics is the investigation of the human needs and their desires and the interference of social, political and economic factors in the decisions leading to the fulfillment of those needs and desires. Economics sheds light on the importance and effect of social situations and political realities of a society and that how it interacts with the decision making process and strategies utilized by the people living in that society. Hence, economics is the investigation of human beings coordinating and fulfilling their wants and desires under social and political influences.
Answer:
Correct Answer: John Locke
Explanation:
John Locke is an English philosopher and physician who had so many philosophical works he published. As one of the greatest Enlightenment thinker, he propounded a theory on liberalism and rights of an individual.
<em>He believed that, an individual rights should not be dependent on the government of a particular country.</em> His works is a pioneer one upon which other great philosophers like David Hume, Immanuel Kant based on for their own writing.
Muhammad was the first man to discover Islam. He believed that the Jews, Muslims, and Christians shared the same God. He believed that it was his job to convert the "submission to the will of God" and warn everyone of the final judgement.
The answer is the past. It is because in order to learn, you need to realize the things you have done in the past and to make sure that the mistakes you had gone through in the past, will never repeat on the future as you are able to realize your faults and failures and it is a way of having guidance to keep in mind, so that it will not happen again.
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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