Consider the image below. This image shows plasmid DNA isolated through exactly the same method that you used. The lanes that were untreated (TE) contain plasmid DNA, but also large amounts of smaller nucleic acids that are predicted to be RNA. What is the experimental evidence from the gel itself that these smaller molecules are RNA? (Hint: look at the treatments performed in each lane)

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,...
icon
Related questions
icon
Concept explainers
Question

Consider the image below. This image shows plasmid DNA isolated through exactly the same method that you used. The lanes that were untreated (TE) contain plasmid DNA, but also large amounts of smaller nucleic acids that are predicted to be RNA.

What is the experimental evidence from the gel itself that these smaller molecules are RNA? (Hint: look at the treatments performed in each lane)

This image shows an agarose gel electrophoresis experiment used to analyze nucleic acids from two plasmids, pUC18 and pBR322, under various treatments. The gel is labeled with lanes 1 through 6, each corresponding to different enzymatic treatments. 

- **Lane 1 (pUC18 RNase)**: Demonstrates treatment with RNase which degrades RNA. The presence of intact plasmid DNA is visible, indicating RNA has been selectively removed.
- **Lane 2 (pUC18 TE)**: Represents a control with TE buffer alone, showing both plasmid DNA and RNA.
- **Lane 3 (pUC18 DNase)**: Shows the effect of DNase that degrades DNA, leaving only the RNA visible.
- **Lane 4 (pBR322 RNase)**: Similar treatment as lane 1, showing plasmid DNA with RNA removed.
- **Lane 5 (pBR322 DNase)**: Illustrates the absence of DNA, highlighting the remaining RNA.
- **Lane 6 (pBR322 TE)**: Control lane showing both plasmid DNA and RNA like lane 2.

Key annotations:
- **Plasmid DNA**: Intact circles at the top of the gel, corresponding to lanes treated with either no enzyme or RNase.
- **RNA**: Located lower down in the gel, visible in lanes with DNase treatment.
- **Location of blue dye front**: Indicates the progress of electrophoresis, marked at the bottom of the gel. 

This experiment illustrates how specific enzymes can target and degrade RNA or DNA, demonstrating selective removal through the presence or absence of bands on the gel.
Transcribed Image Text:This image shows an agarose gel electrophoresis experiment used to analyze nucleic acids from two plasmids, pUC18 and pBR322, under various treatments. The gel is labeled with lanes 1 through 6, each corresponding to different enzymatic treatments. - **Lane 1 (pUC18 RNase)**: Demonstrates treatment with RNase which degrades RNA. The presence of intact plasmid DNA is visible, indicating RNA has been selectively removed. - **Lane 2 (pUC18 TE)**: Represents a control with TE buffer alone, showing both plasmid DNA and RNA. - **Lane 3 (pUC18 DNase)**: Shows the effect of DNase that degrades DNA, leaving only the RNA visible. - **Lane 4 (pBR322 RNase)**: Similar treatment as lane 1, showing plasmid DNA with RNA removed. - **Lane 5 (pBR322 DNase)**: Illustrates the absence of DNA, highlighting the remaining RNA. - **Lane 6 (pBR322 TE)**: Control lane showing both plasmid DNA and RNA like lane 2. Key annotations: - **Plasmid DNA**: Intact circles at the top of the gel, corresponding to lanes treated with either no enzyme or RNase. - **RNA**: Located lower down in the gel, visible in lanes with DNase treatment. - **Location of blue dye front**: Indicates the progress of electrophoresis, marked at the bottom of the gel. This experiment illustrates how specific enzymes can target and degrade RNA or DNA, demonstrating selective removal through the presence or absence of bands on the gel.
Expert Solution
Step 1: Answer

Removing RNA is one of the crucial processes in plasmid purification, especially after the manual isolation technique. The typical method for removing RNA from plasmid samples uses ribonuclease.

steps

Step by step

Solved in 2 steps

Blurred answer
Knowledge Booster
Molecular techniques
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.
Similar questions
Recommended textbooks for you
Human Anatomy & Physiology (11th Edition)
Human Anatomy & Physiology (11th Edition)
Biology
ISBN:
9780134580999
Author:
Elaine N. Marieb, Katja N. Hoehn
Publisher:
PEARSON
Biology 2e
Biology 2e
Biology
ISBN:
9781947172517
Author:
Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher:
OpenStax
Anatomy & Physiology
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)
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
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)
Inquiry Into Life (16th Edition)
Biology
ISBN:
9781260231700
Author:
Sylvia S. Mader, Michael Windelspecht
Publisher:
McGraw Hill Education