Theory relates to a model in science because it presents the possible paradigms and patterns of the said concept and fact. It explains and elaborates the phenomenon of why it happened, how it happened and the factors that are involved in the process. A theory is a possible explanation of certain occurrence.
In addition, any time a scientific theory is challenged, it means it's not a good theory. And this statement is not valid. In theoretical models, they are revisited when there are further studies and discoveries found in a certain area where they can be remodeled and reintegrated instead of disregarding its credibility. Models, theories, and paradigms are not challenged but rather encouraged, they are supported in many studies since these theories and models were created in order for us to understand a certain phenomenon but it would likely help the scientific society to be updated in the new forms or spheres of improvement rather than discouragement. <span> </span>
Answer:
Serial dilution method
Explanation:
To make a dilution of 10-1 dilution, the culture containing the <em>E. coli</em> broth has to be diluted to make it as 0.1 dilution.
STEPS TO BE FOLLOWED:
- Take the given test tube with 2 ml of <em>E.coli</em> broth culture.
- Take another new test tube with 9 ml of saline solution or distilled water.
- From 2 ml of broth solution, take only 1 ml of culture and suspend in 9 ml of saline or distilled water.
- Now, 1 ml of culture is suspended in 9 ml of saline and the broth is suspended. This constitute 10-1 dilution
- If this 10-1 is again suspended in another 9 ml of water leads to 10-2 dilution factor.
- This methods can be used for both solid and liquid samples like soil or sewage.
Uses of serial dilution:
- Helps in determining the different species of organisms present in soil.
- Organisms (Bacteria) can be distinctly identified from each other since the organisms suspended count will be less when they are dilutes upto 10-10 dilution.
Answer:
The letter B is the right answer.
Explanation:
The main objective of the hardin and Weinberg equilibrium is to determine how the allelic frequencies change within a population.
In 1908, Godfrey H. Hardy (1877-1947) and the German physician, Wilhem Weinberg, proposed that if no evolutionary factors act on a given population, the frequencies of their alleles would remain unchanged for several generations. This proposal became known as Hardy-Weinberg's Law (or theorem) or principle of gene balance.
According to this law, the necessary conditions for a population to reach equilibrium are:
a) The population must be large, so that all possible intersections occur.
b) The population must be panmatic (from the Greek pan, all, and from the Latin miscere, mix), that is, the crossings must be carried out randomly, without preconditions.
Within these conditions, without mutation, migration or selection, there will be a genetic balance. Over the generations, genes will not change.
Answer:
I would say D. Exit the room immediately because the fire can spread if u wait to pull the fire alarm and such idk lol.
Explanation:
Just because