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SQUISHY SCIENCE: EXTRACT DNA FROM SMASHED
STRAWBERRIES
ESTEFANIA JARAMILLO SALAZAR
3rd SEMESTERMEDICINE STUDENT
U.P. BFEBRUARY 11/2013
FOLDING
ESTEFANIA JARAMILLO SALAZAR
SQUISHY SCIENCE: EXTRACT DNA FROM
SMASHED STRAWBERRIES
MOLECULAR BIOLOGY
MEDICINE STUDENT3rd SEMESTER
FEBRUARY 11/2013
TEACHERLINA MARÍA MARTINEZ
SANCHEZ
BIBLIOGRAPHY
MEDICAL UTILITY.
Whether you’re a human, rat, tomato or bacterium, each of your cells will have DNA inside of it (with
some rare exceptions, such as mature red blood cells in humans). Each cell has an entire copy of the same set of instructions, and this
set is called the genome. Scientists study DNA for many reasons: They can figure out how the instructions
stored in DNA help your body to function properly. They can use DNA to make new medicines or genetically modify crops to be
resistant to insects. They can solve who is a suspect of a crime, and
can even use ancient DNA to reconstruct evolutionary histories!
To get the DNA from a cell, scientists typically rely on one of
many DNA extraction kits available from biotechnology companies.
During a DNA extraction, a detergent will cause the cell to pop
open, or lyse, so that the DNA is released into solution. Then alcohol
added to the solution causes the DNA to precipitate out. In this
activity, strawberries will be used because each strawberry cell has
eight copies of the genome, giving them a lot of DNA per cell. (Most organisms only have one genome
copy per cell.)
- Scientific American, a Division of Nature America, Inc.” Squishy Science: Extract DNA from Smashed Strawberries.” Scientific American, January 31, 2013. visited on the internet portal:http://www.scientificamerican.com/article.cfm?id=squishy-science-extract-dna-from-smashed-strawberries - Agency for Science, Technology and Research (A*STAR), Singapore. "Nucleus structure crucial to understanding diseases discovered.“ ScienceDaily, 7 Feb. 2013. Web. visited on the internet portal: http://www.sciencedaily.com/releases/2013/02/130208110255.htm
FOLDING
This news is of vital importance, because it allow us to understand diseases and their relation with age, besides that it gives explanation of various syndromes making possible to give better treatment and prevention of disease.
INTRODUCTION
STUDENT OBSERVATION.
Have you ever wondered how scientists extract DNA from an organism? All living organisms have DNA, which is short for deoxyribonucleic
acid; it is basically the blueprint for everything that
happens inside an organism’s cells. Overall,
DNA tells an organism how to develop and function, and is
so important that this complex compound is found in virtually every one of its cells. In this activity you’ll
make your own DNA extraction kit from household
chemicals and use it to separate DNA from
strawberries.
STUDENT OBSERVATION.
I think that this is a very interesting story, curious and funny, which is available to
everyone. is a simple and effective method that provides a start to the DNA testing
allowing a better understanding about the functioning of the same, opening the mind to its utility and who knows probably reaching to some discoveries that allow us to develop new theories in order to apply them on life.
SQUISHY SCIENCE: EXTRACT DNA FROM
SMASHED STRAWBERRIES
Materials : Rubbing alcohol, Measuring cup, Measuring spoons, Salt, water, Dishwashing
liquid, Glass or small bowl, Cheesecloth, Funnel, Tall drinking glass, Three
strawberries, Resealable plastic sandwich bag, Small glass, Bamboo skewer, available
at most grocery stores. Procedure : Prepare the extraction liquid. - Put the strawberries into a resealable plastic
bag - smash the strawberries. - Add three tablespoons of the extraction liquid to the
strawberries. - Squeeze the strawberry mixture - Pour the strawberry mixture from the bag into the funnel. Let it drip through the cheesecloth and into the tall glass until there is very little liquid left in the funnel - Pour the filtered strawberry liquid from the tall glass into the small glass. - Measure out
one half cup of cold rubbing alcohol. - Tilt the jar and very slowly pour the alcohol down its
side. Pour until the alcohol has formed approximately a one-inch-deep layer on top
of the strawberry liquid. Do not let the strawberry liquid and alcohol mix.
The strawberry DNA will appear as gooey clear/white stringy stuff.
NUCLEUS STRUCTURE CRUCIAL TO
UNDERSTANDING DISEASES DISCOVERED
Scientists from Singapore and Germany have identified that the proteins lamin A (Lmna) and lamin B receptor (Lbr) are essential for holding silent genes in their correct position at the edge of the nucleus, in the form of heterochromatin. A deviation from their normal position will cause the genes to malfunction, leading to heart failure, vascular disease and muscle wasting.For hundreds of years before this discovery, scientists were puzzled by why heterochromatin clustered at the edge of the nucleus and how it was relevant to normal cell function. This recent discovery will enable scientists to gain a better understanding of the diseases of the heart and muscles, and find cures for them in the future.The findings by Audrey Wang and Colin Stewart of A*STAR's Institute of Medical Biology and Irina Solovei, Boris Joffe and Heinrich Leonhardt of the Ludwig Maximillian University in Munich, Germany, were recently published in the prestigious journalCell.
INTRODUCTIONINTRODUCTION
Have you ever wondered how scientists extract DNA from an organism? All living organisms have DNA, which is short for deoxyribonucleic
acid; it is basically the blueprint for everything that
happens inside an organism’s cells. Overall,
DNA tells an organism how to develop and function, and is
so important that this complex compound is found in virtually every one of its cells. In this activity you’ll
make your own DNA extraction kit from household
chemicals and use it to separate DNA from
strawberries.
This discovery is an
experimental activity that
works closely with DNA. It
helps its understanding,
leaving the knowledge for
everyone.
DNA is important to all the things that happens in the body's
cells, this tells me how they are develop
and how they work.
SQUISHY SCIENCE: EXTRACT DNA FROM SMASHED
STRAWBERRIES
STUDENT OBSERVATION.
I think that this is a very interesting story, curious and funny, which is available to
everyone. is a simple and effective method that provides a start to the DNA testing
allowing a better understanding about the functioning of the same, opening the mind to its utility and who knows probably reaching to some discoveries that allow us to develop new theories in order to apply them on life.
SQUISHY SCIENCE: EXTRACT DNA FROM
SMASHED STRAWBERRIES
Materials : Rubbing alcohol, Measuring cup, Measuring spoons, Salt, water, Dishwashing
liquid, Glass or small bowl, Cheesecloth, Funnel, Tall drinking glass, Three
strawberries, Resealable plastic sandwich bag, Small glass, Bamboo skewer, available
at most grocery stores. Procedure : Prepare the extraction liquid. - Put the strawberries into a resealable plastic
bag - smash the strawberries. - Add three tablespoons of the extraction liquid to the
strawberries. - Squeeze the strawberry mixture - Pour the strawberry mixture from the bag into the funnel. Let it drip through the cheesecloth and into the tall glass until there is very little liquid left in the funnel - Pour the filtered strawberry liquid from the tall glass into the small glass. - Measure out
one half cup of cold rubbing alcohol. - Tilt the jar and very slowly pour the alcohol down its
side. Pour until the alcohol has formed approximately a one-inch-deep layer on top
of the strawberry liquid. Do not let the strawberry liquid and alcohol mix.
The strawberry DNA will appear as gooey clear/white stringy stuff.
SQUISHY SCIENCE: EXTRACT DNA FROM SMASHED
STRAWBERRIESPreparation of the extraction liquid- Chill the rubbing alcohol in the freezer. (You’ll need it later.)- Mix one half teaspoon of salt, one third cup of water and one tablespoon of dishwashing liquid in a glass or small bowl. Set the mixture aside. This is your extraction liquid. Why do you think there is detergent in the extraction liquid?- Completely line the funnel with cheesecloth. Insert the funnel tube into the tall drinking glass (not the glass with the extraction liquid in it).- Remove and discard the green tops from the strawberries.
SQUISHY SCIENCE: EXTRACT DNA FROM SMASHED
STRAWBERRIESExtra: the experiment can be make it in several ways:- Grab some oatmeal or kiwis from the kitchen and try it again! Which foods give you the most DNA?- Try to tweak different variables in this activity to see how you could change your strawberry DNA yield. For example, you could try starting with different amounts of strawberries, using different detergents or different DNA sources (such as oatmeal or kiwis). Which conditions give you the best DNA yield?
SQUISHY SCIENCE: EXTRACT DNA FROM SMASHED
STRAWBERRIESMaterials
Rubbing alcohol, Measuring cup, Measuring, spoons, Salt, water, Dishwashing liquid (for hand-washing dishes), Glass or small bowl, Cheesecloth, Funnel, Tall drinking glass, Three strawberries, Resealable plastic sandwich bag, Small glass jar, (such as a spice or baby food jar), Bamboo skewer, available at most grocery stores. (If you use a baby food or short spice jar, you could substitute a toothpick for the skewer.)
OBSERVATION
I think that this is a very interesting story, curious and funny, which is available to everyone. is a simple
and effective method that provides a start to the DNA testing allowing a
better understanding about the functioning of the same, opening
the mind to its utility and who knows probably reaching to some
discoveries that allow us to develop new theories in order to apply them
on life.
NUCLEUS STRUCTURE CRUCIAL TO UNDERSTANDING DISEASES
DISCOVERED
This news is of vital importance, because it allow us to understand diseases and their relation with age, besides that it gives explanation of various syndromes making possible to give better treatment and prevention of disease.
STUDENT OBSERVATION.
NUCLEUS STRUCTURE CRUCIAL TO
UNDERSTANDING DISEASES DISCOVERED
Scientists from Singapore and Germany have identified that the proteins lamin A (Lmna) and lamin B receptor (Lbr) are essential for holding silent genes in their correct position at the edge of the nucleus, in the form of heterochromatin. A deviation from their normal position will cause the genes to malfunction, leading to heart failure, vascular disease and muscle wasting.For hundreds of years before this discovery, scientists were puzzled by why heterochromatin clustered at the edge of the nucleus and how it was relevant to normal cell function. This recent discovery will enable scientists to gain a better understanding of the diseases of the heart and muscles, and find cures for them in the future.The findings by Audrey Wang and Colin Stewart of A*STAR's Institute of Medical Biology and Irina Solovei, Boris Joffe and Heinrich Leonhardt of the Ludwig Maximillian University in Munich, Germany, were recently published in the prestigious journalCell.
NUCLEUS STRUCTURE CRUCIAL TO UNDERSTANDING DISEASES
DISCOVEREDThe nucleus has the information as of
chromatin necessary for the cell to grow, develop and reproduce. scientists
showed that AYB like sheet proteins are important for the
organization of chromatin in the nucleus. if there is a lack of these will be a collapse in the nuclear
center causing a disruption of gene
expression and development of affected skeletal muscle, resulting
in muscle failure.
NUCLEUS STRUCTURE CRUCIAL TO UNDERSTANDING DISEASES
DISCOVERED
the findings on changes in the
position of chromatin can contribute to
the exploration of heart failure.
NUCLEUS STRUCTURE CRUCIAL TO UNDERSTANDING DISEASES
DISCOVEREDThis news takes
researchers a step closer to understanding the
nucleus and the development of new
treatments for common diseases. It could be
particularly relevant for Mexico, since, like other developed countries, are
facing the population aging, heart failure,
vascular disease and muscle atrophy that increase with age.
NUCLEUS STRUCTURE CRUCIAL TO UNDERSTANDING DISEASES
DISCOVERED
Two major advances have been made in the
last years, the experimentation with the cloning and the discovery
of the Human Genome Mapping considered the
greatest history feat
OBSERVATION
This news is of vital importance, because it allow
us to understand diseases and their relation with age,
besides that it gives explanation of various
syndromes making possible to give better treatment and
prevention of disease.
MEDICAL UTILITY
MEDICAL UTILITY.
Whether you’re a human, rat, tomato or bacterium, each of your cells will have DNA inside of it (with
some rare exceptions, such as mature red blood cells in humans). Each cell has an entire copy of the same set of instructions, and this
set is called the genome. Scientists study DNA for many reasons: They can figure out how the instructions
stored in DNA help your body to function properly. They can use DNA to make new medicines or genetically modify crops to be
resistant to insects. They can solve who is a suspect of a crime, and
can even use ancient DNA to reconstruct evolutionary histories!
To get the DNA from a cell, scientists typically rely on one of
many DNA extraction kits available from biotechnology companies.
During a DNA extraction, a detergent will cause the cell to pop
open, or lyse, so that the DNA is released into solution. Then alcohol
added to the solution causes the DNA to precipitate out. In this
activity, strawberries will be used because each strawberry cell has
eight copies of the genome, giving them a lot of DNA per cell. (Most organisms only have one genome
copy per cell.)
MEDICAL UTILITY
Allow us to have a more
empirical knowledge about DNA
and its importance
MEDICAL UTILITY
Allow us to have a more conscious
understanding of the importance of
the correct position of the genes in the nucleus and which
may cause abnormalities in the
same, like a malfunction of the
heart's blood vessels and
muscles
BIBLIOGRAPHY
- Scientific American, a Division of Nature America, Inc.” Squishy Science: Extract DNA from Smashed Strawberries.” Scientific American, January 31, 2013. visited on the internet portal:http://www.scientificamerican.com/article.cfm?id=squishy-science-extract-dna-from-smashed-strawberries
- Agency for Science, Technology and Research (A*STAR), Singapore. "Nucleus structure crucial to understanding diseases discovered.“ ScienceDaily, 7 Feb. 2013. Web. visited on the internet portal: http://www.sciencedaily.com/releases/2013/02/130208110255.htm
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