3. (a) Comparing the culture-dependant (e.g., colony forming units count) and DNA-based (e.g., PCR) bacterial number quantification methods, what are the primarydisadvantages of using culture-dependent methods to quantify bacterial numbers in anenvironmental sample? Use no more than three sentences or bullet points to presentyour answer succinctly. (b) At a local wastewater treatment plant receiving municipal wastewater, thesecondary treatment units have been performing severely under the designedbenchmarks, resulting in poor effluent quality. You, a wastewater treatment engineer,suspected that the wastewater treatment microbes in the units might be inhibited.What factors do you want to check to find out potential causalities of the inhibition?List the most common four factors that you want to start your investigation with.e(ii)(iii)_(iv).

Wastewater treatment is the process of removing contaminants and pollutants from wastewater to make…

Answered: 3. (a) Comparing the culture-dependant…

Human Anatomy & Physiology (11th Edition)

11th Edition

ISBN:9780134580999

Author:Elaine N. Marieb, Katja N. Hoehn

Publisher:Elaine N. Marieb, Katja N. Hoehn

Chapter1: The Human Body: An Orientation

Section: Chapter Questions

Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...

See similar textbooks

Similar questions

10) With the disk test, what specifically are you looking for to know if a bacteria is susceptible for an antibiotic? 11) What exactly does bacitracin do to bacteria to cause them to die or stop dividing?
A bacterial culture was grown for 12 hours. At 4-hour interval, the culture was sampled to determine the population of the culture, by transferring 25 ml of the suspension to 225 ml 0.90% NaCl. Three consecutive dilutions were further made by using I ml aliquot in 9 ml of 0.90% NaCl. One ml from each dilution was plated in each of duplicate plates. The following table shows the results of the plating method. 田 Sampling COUNTS 1st dilution 54; 61 2nd dilution 3rd dilution 4h dilution 1st 3; 7 0; 0 0,0 2nd TNTC TNCT 242: 233 28: 37 3rd TNTC TNTC INTC 249-246 * TNTC = Too numerous to count i. Illustrate the dilution series used and label the final dilution of each dilution. ii. Determine the bacterial count (CFU/ml) every 4 hours of incubation for 12 hours. Show all computations.
Could you please assist with correct number?
In the first step of your phage therapy design process, you isolate the exact Mycobacterium strain from the patient. What is the most important thing must you establish next about this bacterial isolate?
1. How is UV radiation a good type of control mechanism against microbial growth? Please explain what happens to the microbe and effects this control causes. 2. Suppose you do the Kirby-Bauer test on a hypothetical Staphylococcus species with penicillin and tetracycline. You record diameters of 20mm for tetracycline and 24mm for penicillin. Which antibiotic is most effective against this bacterium and why? Please explain and interpret these results. 3. Please provide the scientific name of your microbe that was used in the UV experiment (i.e. S. aureus). Compare your plates and interpret/analyze your results. Please discuss your findings and any patterns you were able to gather. 4. After performing the “Effects of Antiseptics & Disinfectants” lab which agent(s) showed potential to control S. marcescens growth? P. aeruginosa? Please explain why you believe these agent(s) work. 5. What purpose does water serve in the “Effects of Antiseptics & Disinfectants” lab? What did you…
If you were to analyze three separate colonies from the plate above, would you expect them all to be the same species of bacteria? Why or why not?
1.What colony characterisitics can be used for differentiation of bacterial species? As an example, compare the properties of colonies of Serratia marcescens and Micrococcus luteus on your streak plate. 2.Define the term colony as it relates to bacterial growth on solid media? 3. why is dilution a necessary part of pure culture preperation? 4.What advantage(s) does the streak-plate method have over the pour-plate method?
You perform the Methyl-Red(MR)& Voges-Proskauer(VP)test and gather the followingresults: (Uploaded picture). VP test result is on the left, MR test result is on the right. A) Please interpret these results. B) Your fellow researcher and yourself are sure your bacterial sample is either E. coli or P. vulargis. Basedupon the work we have done in lab which methods will help you determine which bacteria it is? Please explain why, the results you would want to observe and provide analysis of those results.
What is the purpose of diluting a culture by making "quadrant streaks" (or "streak plating") bacteria, and what can we use them for? Check all that apply A. To observe colony morphology/color B. To isolate viral plaques C. testing growth conditions or treatments (such as media, antibiotics, incubation temperature etc.,) D. To isolate a clonal population of bacteria from the rest of the culture E. For subculturing (transferring to new media so we can grow more bacteria, storing the plate in a fridge for repeated use so the bacteria don't die quickly) F. Accurate quantification (to calculate CFU/mL) G. To know what strain of bacteria you're working with, since you can tell based on how it looks on the plate. H. To lower risk of contamination/identify contamination
A patient comes in with an infection and lab analysis show that the infectious agent is Staphylococcus aureus. Doctor prescribed an antibiotic and told the patient that the infection should clear in 10 days. After 10 days patient comes in with the situation is worsening. Doctor is suspicious of a resistant strain and wants to start another culture to identify the stain and the mutation causing the resistance. What type of media you would use to grow the bacteria sampled from the patient?
1a.) How pH of the culture medium affects the cell culture? Please give examples of low pH and high-pH culture conditions. 1b.) Describe the difference between defined and undefined cell culture media. What are the advantages and disadvantages of both of them?
Order the following technical steps that are required to identify a bacterium by PCR and sequencing of the 16S rRNA gene. [1 mark] - Carry out thermal cycling (amplification) of the PCR - Checking the PCR product (amplication) by agarose gel electrophoresis - Purify the PCR product - Perform a DNA extraction - Sequence the PCR product(Sanger sequencing) - Grow a fresh overnigh liquid culture - Obtain a pure bacterial culture - Set up a 16S Rrna gene PCR - Perform bioinformatic analysis (BLAST)

SEE MORE QUESTIONS

Recommended textbooks for you

Human Anatomy & Physiology (11th Edition)

Biology

ISBN:

9780134580999

Author:

Elaine N. Marieb, Katja N. Hoehn

Publisher:

PEARSON

Biology 2e

Biology

ISBN:

9781947172517

Author:

Matthew Douglas, Jung Choi, Mary Ann Clark

Publisher:

OpenStax

Anatomy & Physiology

Biology

ISBN:

9781259398629

Author:

McKinley, Michael P., O'loughlin, Valerie Dean, Bidle, Theresa Stouter

Publisher:

Mcgraw Hill Education,

Human Anatomy & Physiology (11th Edition)

Biology

ISBN:

9780134580999

Author:

Elaine N. Marieb, Katja N. Hoehn

Publisher:

PEARSON

Biology 2e

Biology

ISBN:

9781947172517

Author:

Matthew Douglas, Jung Choi, Mary Ann Clark

Publisher:

OpenStax

Anatomy & Physiology

Biology

ISBN:

9781259398629

Author:

McKinley, Michael P., O'loughlin, Valerie Dean, Bidle, Theresa Stouter

Publisher:

Mcgraw Hill Education,

Molecular Biology of the Cell (Sixth Edition)

Biology

ISBN:

9780815344322

Author:

Bruce Alberts, Alexander D. Johnson, Julian Lewis, David Morgan, Martin Raff, Keith Roberts, Peter Walter

Publisher:

W. W. Norton & Company

Laboratory Manual For Human Anatomy & Physiology

Biology

ISBN:

9781260159363

Author:

Martin, Terry R., Prentice-craver, Cynthia

Publisher:

McGraw-Hill Publishing Co.

Inquiry Into Life (16th Edition)

Biology

ISBN:

9781260231700

Author:

Sylvia S. Mader, Michael Windelspecht

Publisher:

McGraw Hill Education

SEE MORE TEXTBOOKS