Formulation of medium used smaller amount of carbohydrate

Assignment Help Biology
Reference no: EM1396185

Suppose you innoculate a PR broth with a slow-growing fermenter. After 48 hours, you see slight turbidity but score it as (-/-). Is this result a false positive or a false negative? Is this a result of roor specificity or poor sensitivity of the test system?

Early formulations of this medium used a smaller amount of carbohydrate and occasionally prodused false alkaline (pink) result after 48 hours. Why do you think this happened? List at least two steps, as a microbiologist, that you could take to prevent the problem.

 

Reference no: EM1396185

Questions Cloud

Elucidate why other technique would not work in workplace : Compare also contrast project management also scenario planning techniques with particular emphasis on the implications of the techniques for the manager also the organization. Elucidate why the other technique would not work in your workplace.
Determining that oil cleaning spills are effective machines : A research company has designed three different systems to clean up oil spills. The following table contains the results, measured by how much surface area (in square meters) is cleared in 1 hour. The data were found by testing each method in seve..
Identify the regression equation : Identify the regression equation and make the prediction. Show your procedure, or explain how you reached your answer. Costs of Television: Find the best predicted quality score of a Hitachi television with a price of $1900. Is the predicted qualit..
Why is the rocky intertidal : Why is the rocky intertidal such a great place to advance ecological understanding of interspecific interactions ? I just need several main reasons, do not give me a such long paragraph.
Formulation of medium used smaller amount of carbohydrate : Early formulations of this medium used a smaller amount of carbohydrate and occasionally prodused false alkaline result after 48 hours. Why do you think this happened.
What is the distance in map units between genes a and b : A F1 AB/ab (coupling) was test-crossed. A progeny of 1000 individuals had the following phenotypes: 370 AB, 370 ab, 130 Ab, 130 aB. What is the distance in map units between genes A and B.
Identify the differences in roys also anns listening skills : When listening to a speaker, Roy only hears the person's words. Ann on the other hand, pays attention to a speaker's attitude also determines the key words of the message. Identify the differences in Roys also Anns listening skills.
Multiple regression with excel and megastat : How to do multiple regression using Excel and the Megastat plugin. Students are given step-by-step instructions on how to use the MegaStat plugin for Excel and told why Excel's Data Analysis Toolpak isn't reliable for rigorous statistical analysis..
Under what conditions transcription continue to the end : Under what conditions would attenuation take place? c) Under what conditions would transcription continue through to the end of the operon?

Reviews

Write a Review

Biology Questions & Answers

  What is nonassociative learning

What is nonassociative learning and what are the differences between associative and nonassociative learning. In the small stream, you choose a rock and observe many small, flattened worms crawling on it are under surface. You decide that they belong..

  Describe the process of muscle contraction

Describe the process of muscle contraction and how a neuromuscular blocking agent, as in metubine, would interfere with muscle contraction.

  Draw the nuclear genome content

Construct the nuclear genome content of a 2n=4 organism at G1 and at metaphase, showing each chromosome and sister chromatid as a single vertical line.

  Behaviour of transformed cells

Normal cells greatly slow their rates of cell division after filling culture dish with layer that is one cell deep. If a circular group of cells is removed from the middle of the filled culture dish.

  Effects of toxicant on chromosomes

Critically discuss three of the test systems used to study the effects of a toxicant on chromosomes, describe each test system, and discuss one advantage or disadvantage of that particular test system.

  Genetics related multiple choice questions

Hershey and Chase experimented with radioactively labeled phosphorus and sulfur to determine that DNA and not protein is the genetic material.

  Discuss some aspects of an ideal drug

Explain some new approaches to chemotherapeutic control that works to decrease the incidence of bacterial resistance and discuss some aspects of an Ideal Drug?

  Transcriptional activation during gastrulation

Assume you have found a new Xenopus gene that codes for a RNA binding protein. You are not sure what its function is but you are interested in finding out as much as you can.

  Formation of the first phosphodiester bond in the rna chain

Rifamycin and actinomycin D are two antibiotics derived from bacterium Streptomyces. Rifamycin binds to b subunit of E. coli RNA polymerase and interferes with formation of the first phosphodiester bond in the RNA chain.

  What is reverse isolation

List two types of macromolecules that have been partially digested by the time acid chime moves into the intestine. Where did the digestion take place, and what enzymes were involved.

  How various sperm cells would be expected

Swelling of the abdomen and legs due to edema is characteristic of starving children with kwashiorkor, protein-deficiency disorder. What is the relationship between this symptom and procedure of capillary exchange.

  Which atom represents the 18o isotope of oxygen

Atoms can be represented by simply listing the number of protons, neutrons, and electrons-for example, 2 p+; 2 n0; 2 e- for helium. Which atom represents the 18O isotope of oxygen.

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd