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You are about to isolate a 3000 bp large plasmid from an E.coli culture. You know that the plasmid is present in 100 copies per E. coli cell. You aim to have a final plasmid concentration of 100 ng/µl in a total volume of 50 ul. Assuming the yield is 100 %, how many E. coli cells should the culture from which the plasmid is to be isolated at least contain A) 4.7 · 1013 cells B) 1.6 · 1010 cells C) 3.2 · 1010 cells D) 3.2 · 1026 cells E) 1.6 · 1012 cells Solution B that was used during the plasmid isolation contains 0.2 M NaOH (see practical manual). Which effect does NaOH have on E. coli DNA A) It denatures genomic DNA and plasmid DNA. B) It denatures genomic DNA and but not plasmid DNA. C) It denatures plasmid DNA but not genomic DNA. D) It denatures neither genomic DNA nor plasmid DNA. E) This is unpredictable. Which statement on the migration of DNA fragments through agarose gels is false A) Small fragments migrate faster than larger fragments because they can move faster through the agarose pores. B) Large fragments migrate faster than small fragments because they carry more negative charges. C) DNA fragments migrate towards the positive pole. D) Supercoiled DNA may migrate significantly different through the gel than linear DNA of equal size. E) The higher the agarose concentration the better the separation of smaller fragments as compared to larger fragments.

You are about to isolate a 3000 bp large plasmid from an E.coli culture. You know that the plasmid is present in 100 copies per E. coli cell. You aim to have a final plasmid concentration of 100 ng/µl in a total volume of 50 ul. Assuming the yield is 100 %, how many E. coli cells should the culture from which the plasmid is to be isolated at least contain A) 4.7 · 1013 cells B) 1.6 · 1010 cells C) 3.2 · 1010 cells D) 3.2 · 1026 cells E) 1.6 · 1012 cells Solution B that was used during the plasmid isolation contains 0.2 M NaOH (see practical manual). Which effect does NaOH have on E. coli DNA A) It denatures genomic DNA and plasmid DNA. B) It denatures genomic DNA and but not plasmid DNA. C) It denatures plasmid DNA but not genomic DNA. D) It denatures neither genomic DNA nor plasmid DNA. E) This is unpredictable. Which statement on the migration of DNA fragments through agarose gels is false A) Small fragments migrate faster than larger fragments because they can move faster through the agarose pores. B) Large fragments migrate faster than small fragments because they carry more negative charges. C) DNA fragments migrate towards the positive pole. D) Supercoiled DNA may migrate significantly different through the gel than linear DNA of equal size. E) The higher the agarose concentration the better the separation of smaller fragments as compared to larger fragments.

Biochemistry
Biochemistry
9th Edition
ISBN:9781319114671
Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Chapter1: Biochemistry: An Evolving Science
Section: Chapter Questions
Problem 1P
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You are about to isolate a 3000 bp large plasmid from an E.coli culture. You know that the plasmid is present in 100 copies per E. coli cell. You aim to have a final plasmid concentration of 100 ng/µl in a total volume of 50 ul. Assuming the yield is 100 %, how many E. coli cells should the culture from which the plasmid is to be isolated at least contain A) 4.7 · 1013 cells B) 1.6 · 1010 cells C) 3.2 · 1010 cells D) 3.2 · 1026 cells E) 1.6 · 1012 cells Solution B that was used during the plasmid isolation contains 0.2 M NaOH (see practical manual). Which effect does NaOH have on E. coli DNA A) It denatures genomic DNA and plasmid DNA. B) It denatures genomic DNA and but not plasmid DNA. C) It denatures plasmid DNA but not genomic DNA. D) It denatures neither genomic DNA nor plasmid DNA. E) This is unpredictable. Which statement on the migration of DNA fragments through agarose gels is false A) Small fragments migrate faster than larger fragments because they can move faster through the agarose pores. B) Large fragments migrate faster than small fragments because they carry more negative charges. C) DNA fragments migrate towards the positive pole. D) Supercoiled DNA may migrate significantly different through the gel than linear DNA of equal size. E) The higher the agarose concentration the better the separation of smaller fragments as compared to larger fragments.
Transcribed Image Text:You are about to isolate a 3000 bp large plasmid from an E.coli culture. You know that the plasmid is present in 100 copies per E. coli cell. You aim to have a final plasmid concentration of 100 ng/µl in a total volume of 50 ul. Assuming the yield is 100 %, how many E. coli cells should the culture from which the plasmid is to be isolated at least contain A) 4.7 · 1013 cells B) 1.6 · 1010 cells C) 3.2 · 1010 cells D) 3.2 · 1026 cells E) 1.6 · 1012 cells Solution B that was used during the plasmid isolation contains 0.2 M NaOH (see practical manual). Which effect does NaOH have on E. coli DNA A) It denatures genomic DNA and plasmid DNA. B) It denatures genomic DNA and but not plasmid DNA. C) It denatures plasmid DNA but not genomic DNA. D) It denatures neither genomic DNA nor plasmid DNA. E) This is unpredictable. Which statement on the migration of DNA fragments through agarose gels is false A) Small fragments migrate faster than larger fragments because they can move faster through the agarose pores. B) Large fragments migrate faster than small fragments because they carry more negative charges. C) DNA fragments migrate towards the positive pole. D) Supercoiled DNA may migrate significantly different through the gel than linear DNA of equal size. E) The higher the agarose concentration the better the separation of smaller fragments as compared to larger fragments.
Expert Solution
Step 1

Multiple questions asked. I will answer the first question as per guidelines. Please repost the others as separate question.

1 DNA bp weight = 650 g

Given :

100 plasmid copies per cell

Plasmid concentration= 100 ng/microL

Total volume = 50 microL

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