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Q: What is the function of a selective media? What are 3 examples and for what they are selective?
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Q: If a culture had 4 cells to begin with and has a generation time of 60 minutes, how long would it…
A: "Microbiology" is the study of microorganisms and associated topics. Microbiology has gone a long…
Q: How would you use a differential and selective medium in the microbiological analysis of a…
A: Differential media refers to the media that allows for the visual identification of various…
Q: Why don't you get isolated colonies from the pour plate if the broth culture was not diluted first?
A: The pour plate method is a technique used to count the number of colony-forming bacteria found in a…
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A: Micro organisms are typically grown in a closed culture media. Nutrients are added according to the…
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Q: Which characteristic of the species used determines whether sterility was achieved when autoclaved?
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Q: What kind of medium might you make to selectively grow a bacterium that lives in your gut?
A: MacConkey agar is used as a selective and differential media for differentiating gut bacteria which…
Q: What is a selective medium? What is a differential medium?
A:
Q: why is it that psychrotrophs placed in TSA medium are incubated at 7oC?
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Q: The culture medium can be reffered to as a 'highly enriched labotary soil.justify this statement?
A: Culture medium: It is also known as a growth medium where specific microorganisms and plants will…
Q: What if the purpose of bacterial culture? Why might it be useful to grow bacteria?
A: According to question what is the purpose of bacterial culture. Why might it be useful to grow…
Q: Calculate mean growth rate and generation time of a culture that increase in exponential phase from…
A: Generation time is time taken for culture organisms to double in size. Generation time = t/n where…
Q: Calculate the growth rate and generation time of a culture that increases in the exponential phase…
A: Growth refers to changes in viable cell count as compared to time. The time it takes for bacteria to…
Q: how can you use the unique characteristics of Listeria monocytogenes to produce a growth medium that…
A: Selective media contains those nutritional factors which will provide the growth of only desired…
Q: attern used to inoculate agar slant to get luxuriant culture. This pattern increases the surface…
A: Slant culture : A culture made on the slanting surface of a solidified medium in a test tube that…
Q: How does McConkey agar serve as both selective medium and differential medium ?
A: MacConkey agar is a culture media that contain bile salts, crystal violet dye, neutral red dye along…
Q: Why after a certain period the growth rate of the culture decreases until growth stops?
A: Warmth, dampness, pH levels and oxygen levels are the four major physical and chemical components…
Q: Why have several specialized media been developed? Give an example ofone such medium.
A: Culture media is of basic importance for many microbiological tests: to get pure cultures, to grow…
Q: Calculate the growth rate and generation time of a culture that increases in the exponential phase…
A: The growth of bacteria over a period of time is represented by a growth curve. This curve tells the…
Q: why macconkey agar and mannitol salt are regard as salective and deffrental medium?
A: A culture medium is just water and nutrients that support microbic growth. Primary culture media for…
Q: Why is agar ideal for microbial cultivation?
A: The microbial cultivation is the process in which microorganisms are cultivated in the laboratory,…
Q: give one reason why is it necessary to keep stirring the agar medium mixture in a beaker when…
A: Agar is a heteropolysaccharide, which is composed of different carbohydrate units. Agar is obtained…
Q: How can you determine whether a culture or subculture is pure?
A: A pure culture can be defined as a population of cells or multicellular organisms growing in the…
Q: Why would cells that are vigorously growing when inoculated into fresh culture medium have a shorter…
A: Growth curves are generally the description of the density of cell populations in liquid culture…
Q: if straph are only suppose to grow on the plate what could possibly be wrong with the media ?
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Q: How is the generation time (g) of an exponentiallygrowing culture determined?
A: Bacteria are microorganism that most commonly occur in the soil, air, water and in adverse…
Q: why are psychrotrophic bacteria incubated at 7 degrees
A: Each species of microbe has a preferred temperature that lies somewhere between its characteristic…
Q: What is selective and differential media? describe their purpose.
A: Numerous media types are employed in the study of microorganisms. The following definitions apply to…
Q: What process would explain why the dyes spread through the agar?
A: Agar -- Agar is polymer and mixture of polysaccharides obtained from the cell wall of red algae .…
Q: A fastidious organism must be grown on what type of medium? a. general-purpose medium c. synthetic…
A: The medium or the growth medium has essential nutrients for the growth of the microbes. There…
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A: Abstract Error bars commonly appear in figures in publications, but experimental biologists are…
Q: What compounds or chemicals might be added to a medium to make it selective?
A: Culture medium or growth medium is a liquid, solid, or semisolid designed to support the growth of…
Q: What are the factors that have affected the growth of mold in your bread experiment?
A: Introduction Bread is a perfect environment for microscopic fungi known as mold to grow, The purpose…
Q: Would all microorganisms exhibit the same bacterial growth curve? Why?
A: The bacterial growth curve is a closed curve, it is typical in nature for all microorganisms. All…
Q: What is the difference between selective and differential media? Give one example of each.
A: Culture medium is referred to as a medium of nutrients that supports microbic growth. The amount of…
Q: Colonies have grown in a nutrient agar plate. However, it did not grow along the lines of streaking.…
A: Streaking method This method is used to produce isolated colonies of bacteria. This helps in…
Q: What is agar and what makes it the best agent for making culture media? explain
A: Microbiology is the branch of science which deals the study of different microorganisms such as…
Q: Why are agar plates incubated upside down?
A: The Petri dish has existed for over a decade, whereas simple, cell-growing equipment remains…
Q: Which culturing method provided the clearest results, the semisolid medium tube or the soft agar…
A: Agar is a jelly-like substance obtained from red algae. It is a mixture of two components namely…
Q: On agar plate does each discrete colony represent the growth of one cell? Explain your answer. Why…
A: Question - On agar plate does each discrete colony represent the growth of one cell? Explain your…
Q: Explain why an isolated colony and a pure culture are not the samething.
A: The isolation techniques: It consists of separation of bacterial cells from other cells from mixed…
Q: Why is it easier for microorganisms to grown on plastic surface rather than wood?
A: Answer- Wood does have natural antibacterial properties. The organism of bacterium like- Ideonell…
Q: A bacterium is inoculated into a medium containing two carbon sources, one of which is the…
A: If a bacterium is grown in a medium containing lactose and glucose, it will first utilize glucose…
Q: Compare and contrast the growth of bacteria in different physical types of media (broths, slants,…
A: Growth medium, also known as culture medium involves solid, semi-solid, or liquid, medium that is…
Some exconjugants did not grow on minimal medium.
On what medium would they grow?
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- On agar plate does each discrete colony represent the growth of one cell? Explain your answer. Why can a single colony on a plate be used to start a pure culture?Why would cells that are vigorously growing when inoculated into fresh culture medium have a shorter lag phase than those that have been stored in a refrigerator?Assume you have a stock culture at 5 x 109 cells/mL and you wish to inoculate 1 liter of fresh medium so that in 15 hours the cell density will be 2 x 108/mL. Assume a generation time of 3.5 hours. What should be the dilution?
- Can you tell IF the pasteurization process is working in this milk producing plant? How can you explain this by looking at the bacterial plate growth? How can you tell it is or is not working?Name and explain the culture media that can be used for cultivating non-specific and specific microorganism? b. can culture medium be placed in a freezer? why or why notIs the mannitol salt agar (MSA) a complex or defined medium? Explain based on Composition. What kind of media based on what kind of microorganisms it allows to grow
- Calculate the growth rate and generation time of a culture that increases in the exponential phase from 5 x 102 to 1 x 108 cells in 12 hours.What kind of medium might you make to selectively grow a bacterium that lives in your gut?Why have several specialized media been developed? Give an example ofone such medium.
- Colonies have grown in a nutrient agar plate. However, it did not grow along the lines of streaking. Is this normal? If not, what could be the problem?If a culture had 4 cells to begin with and has a generation time of 60 minutes, how long would it take to get 1,048,576 cells?What is a complex medium? and What are the basic components of a culture medium?