Why did the lab technicians need to mechanically crush the microbes and chemically dissolve their cell membranes? Choose one: O A DNA must be replicated experimentally and the detergents that are used contain the chemicals needed to rapidly reproduce the bacterial DNA fragments for analysis. O B. DNA is contained in the cytoplasm within a cell, so the cell membrane must be destroyed for the cytoplasm, and DNA, to be released for analysis. O C. DNA is normally found within the interior of the cell membrane, associating with the lipid fatty acid chains, so the cell membrane must be dissolved with detergent for the DNA to be released for analysis. O D. DNA must be double-stranded before chemical analysis can take place and bacterial DNA must be outside a cell to be double-stranded.
Why did the lab technicians need to mechanically crush the microbes and chemically dissolve their cell membranes? Choose one: O A DNA must be replicated experimentally and the detergents that are used contain the chemicals needed to rapidly reproduce the bacterial DNA fragments for analysis. O B. DNA is contained in the cytoplasm within a cell, so the cell membrane must be destroyed for the cytoplasm, and DNA, to be released for analysis. O C. DNA is normally found within the interior of the cell membrane, associating with the lipid fatty acid chains, so the cell membrane must be dissolved with detergent for the DNA to be released for analysis. O D. DNA must be double-stranded before chemical analysis can take place and bacterial DNA must be outside a cell to be double-stranded.
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,...
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Transcribed Image Text:An applied ecologist and writer with an infectious passion for science has initiated a project to answer the simple
question: What lives on our skin? The belly button, as small and strange as it is, is an excellent place to look. So, he set
forth to swab the belly buttons of citizen scientist volunteers. The scientist decided to sequence the DNA from each
belly button sample to determine the identity of the resident microbes, especially those that do not grow in a
laboratory culture. To do so, lab technicians first accessed the DNA by mechanically crushing the microbes and
chemically dissolving their cell membranes with detergent, similar to how dish soap dissolves grease clinging to a dirty
dish.
1st attempt
Why did the lab technicians need to mechanically crush the microbes and chemically dissolve their cell
membranes?
Choose one:
O A DNA must be replicated experimentally and the detergents that are used contain
the chemicals needed to rapidly reproduce the bacterial DNA fragments for
analysis.
O B. DNA is contained in the cytoplasm within a cell, so the cell membrane must be
destroyed for the cytoplasm, and DNA, to be released for analysis.
O C. DNA is normally found within the interior of the cell membrane, associating with
the lipid fatty acid chains, so the cell membrane must be dissolved with detergent
for the DNA to be released for analysis.
O D. DNA must be double-stranded before chemical analysis can take place and
bacterial DNA must be outside a cell to be double-stranded.
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