EBK MICROBIOLOGY:W/DISEASES BY BODY...-
5th Edition
ISBN: 9780134608242
Author: BAUMAN
Publisher: PEARSON
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Chapter 20, Problem 15MC
Summary Introduction
Introduction:
Immunizing agents are those which increase the host resistance to a particular infections. Vaccines is one of the immunizing agents which are immune-biological substance designed to produce specific protection against a given disease.
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a) Calculating Transformation Efficiency
For the +DNA/+Amp/+IPTG plate, record the following:
Number of transformants (colonies): _________________
Nanograms of plasmid DNA added: 50 ng
Final recovery volume: 0.50 mL
Volume plated: 0.25 mL
Transformation efficiency equation:
Transformation efficiency = Number of transformants / µg of DNA x Final volume at recovery (mL)/ volume plated (mL)
b) Using the equation above, calculate the transformation efficiency.
c) Describe the success of the transformation efficiency of this demo based on the calculation you did above?
a) What differences would you expect to see between the -DNA/+Amp and +DNA/+Amp plates?
b) Predict the growth you would expect to see on each of the following plates:
– DNA ___________________________________________________________
– DNA/+Amp ______________________________________________________
+DNA/+Amp ______________________________________________________
+DNA/+Amp/+IPTG _________________________________________________
1)Which plate did you see purple/pink/blue bacterial cells? Why did you see this growth? Explain your answer in terms of transformation and plasmids?
2) Calculating Transformation Efficiency
For the +DNA/+Amp/+IPTG plate, record the following:
Number of transformants (colonies): _________________
Nanograms of plasmid DNA added: 50 ng
Final recovery volume: 0.50 mL
Volume plated: 0.25 mL
Transformation efficiency equation:
Transformation efficiency = Number of transformants / µg of DNA x Final volume at recovery (mL)/ volume plated (mL)
3) Using the equation above, calculate the transformation efficiency.
4) Describe the success of the transformation efficiency of this demo based on the calculation you did above?
Chapter 20 Solutions
EBK MICROBIOLOGY:W/DISEASES BY BODY...-
Ch. 20 - Prob. 1TMWCh. 20 - Prob. 1EDCSCh. 20 - Prob. 1CCSCh. 20 - Prob. 2TMWCh. 20 - Prob. 2CCSCh. 20 - Prob. 2EDCSCh. 20 - Prob. 3TMWCh. 20 - Prob. 4TMWCh. 20 - Prob. 3CCSCh. 20 - Prob. 5TMW
Ch. 20 - A Protozoan Mystery A 20-year-old student was...Ch. 20 - Prob. 6TMWCh. 20 - Prob. 7TMWCh. 20 - A Very Sick Sophomore In December, a 19-year-old...Ch. 20 - Cerebrospinal fluid is _____. a. formed deep...Ch. 20 - The layer of the meninges lying closest to the...Ch. 20 - Prob. 3MCCh. 20 - Prob. 4MCCh. 20 - Prob. 5MCCh. 20 - Prob. 6MCCh. 20 - Prob. 7MCCh. 20 - Prob. 8MCCh. 20 - Prob. 9MCCh. 20 - Prob. 10MCCh. 20 - Which of the following diseases is caused most...Ch. 20 - Prob. 12MCCh. 20 - Prob. 13MCCh. 20 - Prob. 14MCCh. 20 - Prob. 15MCCh. 20 - Prob. 1FIBCh. 20 - Prob. 2FIBCh. 20 - Prob. 3FIBCh. 20 - Prob. 4FIBCh. 20 - Prob. 5FIBCh. 20 - Prob. 6FIBCh. 20 - Prob. 7FIBCh. 20 - Prob. 8FIBCh. 20 - Prob. 9FIBCh. 20 - Prob. 10FIBCh. 20 - Prob. 11FIBCh. 20 - Prob. 12FIBCh. 20 - Prob. 13FIBCh. 20 - A sexually transmitted bacterium, ________, causes...Ch. 20 - Prob. 15FIBCh. 20 - Prob. 1VICh. 20 - Indicate on the drawing where a lumbar puncture...Ch. 20 - Distinguish among the following infections:...Ch. 20 - Prob. 2SACh. 20 - Prob. 3SACh. 20 - Prob. 4SACh. 20 - Prob. 5SACh. 20 - Prob. 6SACh. 20 - Prob. 7SACh. 20 - Prob. 8SACh. 20 - Prob. 9SACh. 20 - Prob. 1CTCh. 20 - Prob. 2CTCh. 20 - Prob. 3CTCh. 20 - Prob. 4CTCh. 20 - Prob. 5CTCh. 20 - How are the actions of botulism and tetanus toxins...Ch. 20 - Prob. 7CTCh. 20 - Prob. 8CTCh. 20 - Why does the fact that M. leprae grows best at 30C...Ch. 20 - Prob. 10CTCh. 20 - Prob. 1CM
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- Overview of Transformation Protocol -Prepare competent bacteria for transformation: Treat starter E. coli bacteria with CaCl2and Competent Cell Solution (CCS). Store on ice until transformation procedure. Competent cells are cells that are likely to take up foreign DNA and be transformed. This step increases the likelihood that the E. coli cells will take up the introduced vector and be transformed. -Transformation procedure: Obtain two microcentrifuge tubes containing your competent cells. Label one tube +DNA and one -DNA. Add CaCl2 to both tubes. Add the transformation mix containing the plasmid DNA to the tube labeled +DNA. Do not add any plasmid DNA to the -DNA tube. Incubate both tubes on ice for 10 minutes. Then, place both tubes in a 42\deg C water bath for 45 seconds. Replace the tubes in an ice bucket for 2 minutes. Add recovery broth to both tubes. Incubate both tubes in a 37 C water bath for 5 minutes. Questions: 1) What differences would you expect to see between the…arrow_forwardOverview of Transformation Protocol -Prepare competent bacteria for transformation: Treat starter E. coli bacteria with CaCl2and Competent Cell Solution (CCS). Store on ice until transformation procedure. Competent cells are cells that are likely to take up foreign DNA and be transformed. This step increases the likelihood that the E. coli cells will take up the introduced vector and be transformed. -Transformation procedure: Obtain two microcentrifuge tubes containing your competent cells. Label one tube +DNA and one -DNA. Add CaCl2 to both tubes. Add the transformation mix containing the plasmid DNA to the tube labeled +DNA. Do not add any plasmid DNA to the -DNA tube. Incubate both tubes on ice for 10 minutes. Then, place both tubes in a 42\deg C water bath for 45 seconds. Replace the tubes in an ice bucket for 2 minutes. Add recovery broth to both tubes. Incubate both tubes in a 37 C water bath for 5 minutes. Questions: 1)What is the selectable marker in this experiment? How…arrow_forwardBased on your results, which suspect's DNA best matches the DNA found at the crime scene?arrow_forward
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