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Plate streaking is often done to isolate a colony of bacteria. For instance, if a broth was grown with 2 or 3 different types of bacteria, it could be streaked out in a "3-phase streak." In a 3-phase streak the initial streak takes up a very small area (we draw a T on the back of the plate, this streak goes in the section above the T). The loop is flamed to kill off any bacteria still on it, then a couple streaks are made out of the original. This grabs some of the bacteria from that concentrated streak and spreads them out. This is repeated once more until the final streaks are less and less concentrated bacteria.
When we incubate the plate we'll find lots of growth where the original streak was and less and less as we follow the path of the 3-phases. What you're looking for now is a single colony, off by itself. This can then be scraped off and plated on a separate plate and considered a "pure colony."
Another usual time to use streak-to-grow bacteria is when you want to know the quantity or concentration of bacteria. You take maybe 0.1mL of solution and plate it, then count the number of colonies that form. Say you have 56 colonies, now you can say:
56 cfu (colony forming units)
--------
0.1 mL
or 560 cfu/mL
This is usual when testing to see whether a sterilization technique worked, or if a product is within the regulated levels of bacteria to be released the public, etc etc.
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Is it safe putting honey in eyes to lighten them If so how long would this method take to see results?
It is not safe to put honey in your eyes as it can cause irritation, infection, and potentially damage your eyesight. If you want to lighten your eyes, it is best to consult with an eye care professional for safe and effective methods.
What would a body builder want?
A bodybuilder would likely want to build and maintain muscle mass, reduce body fat percentage, improve strength and endurance, and optimize their overall physical appearance. They may also focus on consuming a diet that supports muscle growth and recovery, and engage in targeted training programs to develop specific muscle groups.
I want to have a DNA test done for my son and I and I want it to be done with a blood test not a swab. ?
You can have a blood test done, but believe it or not the technology is gearing more towards the swab and the swab is as accurate. One of the reasons is the fact that sometimes people might have a blood transfusion or bone marrow transplant which can jeorpadize the test result.
What method is best when considering the long term storage of paper documents?
The best option for the long term storage of paper documents is to seal them in an air tight container and store them in a climate controlled storage unit. You might want to consider copying the documents to a file and store them on your computer as a back up.
Have you noticed any unusual changes, such as the presence of white hair on your body, that you would like to discuss"?
"Have you noticed any unusual changes, like white hair appearing on your body, that you want to talk about?"
What measurement unit microbiologist use when they want to measure something really small?
DNA And RNA
What boot parameter would you use to begin an FTP installation?
You would want to use Askmethod or method.
What does objectives means on a resume?
Your objective is the job that you want. For example, an objective could be: High School Social Studies Teacher, Clinical Psychologist, or Microbiologist.
If your stock spoils which method of moving inventory would you want to use?
fifo
The scientific method is a method for?
It's a method for you to use when you want to experiment.
Why would you want to do an interview for a job analysis method?
You might want to interview someone who is doing a job, to obtain information that you could analyse.
Apply Concepts and enspIn general when would you use filtration to separate a mixture When would you use distillation to separate a mixture?
- Filtration is a method of separation when we want to separate solids from a liquid.- Distillation is a method of separation when we want to separate the components of a liquid mixture, relying on the differences between boiling points.
What is need for static method?
Static methods are methods that can be invoked without creating an instance of the class that contains them. They are needed in cases where the programmer would not want to create multiple instances of a class to execute a method.
Why might you want to define an abstract class?
You would use an abstract class when you want a number of classes to have a similar functionality/methods list. The abstract class will have only method declarations and no definitions. So any class that extends this abstract class would have to provide the method definitions. This way you can ensure that all these classes will have a similar set of methods/features. This type of usage of an abstract class is similar to interfaces.
What does the final modifier mean on a method parameter?
We usually use the final modifier on parameters to methods when we want to make it clear that the supplied value cannot be modified inside the method. The compiler would complain as soon as you accidentally try to assign it a new value inside the method
When is a return statement required in a method?
1) When you want to end the method prematurely for any reason. However, it is usually recommended to have a single exit point in a method, so you may want to avoid this. 2) When the method produces a result, which must be returned to the calling program.
Example of descriptive method of research?
In this research, you would want to show as much information as possible. Include all of the details along with pictures and charts if applicable.
