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Because viruses cannot multiply without a host cell, they cannot be grown in sterile media the way bacteria can. Host cells must be provided for the virus to infect. Bacteriophage may be cultured with bacterial cells in liquid culture or on plates. To culture on plates, bacteria and bacteriophage are combined in melted agar and then poured into plates. The bacterial cells divide and evenly cover the surface of the plate forming a lawn. Wherever bacterial cells have been destroyed by the bacteriophage, clearings called plaques will appear in the lawn. Because it is harder to culture animal cells than it is for most bacteria, it is also more difficult to grow animal viruses in the lab. Some animal cells will grow in culture dishes much as bacteria do and will form a single layer on the bottom of a dish that contains a suitable growth medium. Viruses that can infect these cells can be grown along with them. Animal cells that are infected by the virus will display visible deterioration. Some viruses whose host cells can not be grown in culture can be grown in living animals such as rabbits, mice, and guinea pigs. Other viruses can be grown in fertilized chicken eggs. However, because some viral host ranges are highly specific, each virus infects only certain cell types, I cannot grow all cells in culture, yes grow all viruses.
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What is the purpose of using a streak plate in microbiology experiments?
The purpose of using a streak plate in microbiology experiments is to isolate and separate individual bacterial colonies for further study and identification.
How can agar plate art be used as a creative tool in microbiology education and outreach?
Agar plate art can be used in microbiology education and outreach to engage students and the public by visually representing microbial growth patterns and characteristics. This creative tool can help make complex microbiology concepts more accessible and memorable, sparking interest and curiosity in the field.
What are the differences between an agar plate and a Petri dish in microbiology experiments?
An agar plate is a specific type of Petri dish that contains a solid growth medium called agar. Petri dish is a broader term that refers to any shallow, flat, circular dish used in microbiology experiments. The key difference is that an agar plate contains agar as a solid medium for microbial growth, while a Petri dish can be used with various types of media, including agar.
What is the importance of a pour plate in microbiology?
Extensively used with procaryotes and fungi, a pour plate can yield isolate colonies. The original sample is diluted several times to reduce the microbial population sufficiently to obtain seprate colonies when plating. The pour plate can be used to determine the number of cells in a population.
How can dilution streaking be effectively utilized in microbiology experiments to isolate and identify specific bacterial colonies?
Dilution streaking is a technique used in microbiology to separate and identify individual bacterial colonies. By diluting the sample and streaking it on an agar plate in a specific pattern, the bacteria are spread out, allowing for the growth of individual colonies. This makes it easier to isolate and identify specific bacterial species present in the sample.
What is the purpose of using a streak plate in microbiology experiments?
The purpose of using a streak plate in microbiology experiments is to isolate and separate individual bacterial colonies for further study and identification.
What is a control plate?
A control plate is used for testing a known result on controlled bacterial strains in microbiology. They are typically incubated.
How can agar plate art be used as a creative tool in microbiology education and outreach?
Agar plate art can be used in microbiology education and outreach to engage students and the public by visually representing microbial growth patterns and characteristics. This creative tool can help make complex microbiology concepts more accessible and memorable, sparking interest and curiosity in the field.
What is the function of a hockey stick in microbiology?
In microbiology, a hockey stick is a tool used for streaking bacterial cultures on agar plates to isolate individual colonies. By dragging the stick across the plate, the bacteria are spread out in a way that allows for distinct colonies to grow. This helps microbiologists study and identify different strains of bacteria.
What are the differences between an agar plate and a Petri dish in microbiology experiments?
An agar plate is a specific type of Petri dish that contains a solid growth medium called agar. Petri dish is a broader term that refers to any shallow, flat, circular dish used in microbiology experiments. The key difference is that an agar plate contains agar as a solid medium for microbial growth, while a Petri dish can be used with various types of media, including agar.
What is the importance of a pour plate in microbiology?
Extensively used with procaryotes and fungi, a pour plate can yield isolate colonies. The original sample is diluted several times to reduce the microbial population sufficiently to obtain seprate colonies when plating. The pour plate can be used to determine the number of cells in a population.
What drives the process of plate tectonics the currently accepted explanation for the movements of drifting continents?
Unequal heat distribution.
Which businesses can one go to in order to design a name plate?
There are a variety of companies which offer name plate design services. Northern Engraving, Serif, and Name Tag Country, for example, each offer this service.
What does SMID2 stand for in microbiology?
SMID means "Salmonella Identification." It is an agar made by bioMerieux that contains chemicals which change color when salmonella is grown on the plate. SMID2 is the new-and-improved version.
What explanation could be given for the failure of obtaining isolated coloni es on a streak plate?
Failure to obtain isolated colonies on a streak plate could be due to overcrowding on the plate, improper streaking technique, or contamination of the plate from the environment or the inoculation source. It is important to streak the plate in a way that allows for sufficient separation of individual colonies to form.
What is considered a high plate count?
A high plate count in microbiology typically refers to the presence of a large number of bacterial colonies on a culture plate. The specific threshold for what is considered "high" can depend on the type of sample being tested and the laboratory's protocols. In general, a plate with more than 300 colonies may be indicative of contamination or a high bacterial load.
Why is tectonic plate movement still called the theory of plate tectonic movement?
Tectonic plate movement is still considered a theory because it is a well-substantiated explanation based on evidence and scientific reasoning. In science, a theory is an explanation that has been thoroughly tested and supported by numerous observations and experiments, and the theory of plate tectonics has provided valuable insights into the Earth's geological processes.
