B. Were your experimental results what you expected to see? Specifically, was there more or less DNA than you expected?…
Describe the results you would expect from electrophoretic separation of fragments from the following treatments of the DNA segment above. Assume that the digestion occurred under appropriate conditions and went to completion.…
There are three specific steps required to isolate DNA from its cellular contents. The steps used to remove and expose DNA from its cell are: breaking down the food type you are using by crushing it, for example a banana or strawberries, exposing the substance to a sodium chloride (NaCl) solution, subjecting the product to detergent solution (dH2O), filtering the solution and lastly, the addition of ethanol. When beginning with a solid substance, such as a banana, crushing the substance allows for breaking down the cell membrane and cell wall, if using a plant cell. This ultimately, removes the contents of the cell from the deoxyribonucleic acid (DNA) and further exposes it for the detergent solution. After this step, one would use NaCl solution to stabilize the DNA, since we know that it is negatively charged, due to the phosphate functional group. The way this occurs is when NaCl is added to the solution the molecule dissolves and forms ions. As a result, the positively charged ions neutralize the negative charge on the DNA molecule ("Discovering DNA" 20 Feb. 2014). The technique used to separate the DNA is by adding a detergent liquid to the solution, which allows for the cell membrane to break down. This step specifically emulsifies the phospholipids and proteins that make up the cell membrane ("Discovering DNA" 20 Feb. 2014), in order to further expose the DNA. Then in order to separate the DNA from the proteins and lipids one must use a filter paper with an appropriate pore size so that the flow rate of the solution is effective. Once the flow rate is minimal, the excess in the filter, consisting of cell debris and banana residue, can be disposed and then the filtrate is focused upon. With the specific amount of…
The purpose of this lab is to investigate the comparison between the amount of DNA per gram of fruit that can be extracted from a banana, strawberry and kiwi and to determine which one has more DNA.…
The botanist advised the state agent to use the size of the protein “compositase” to find the identity of the plant in the pot. This process uses electric currents to draw DNA out from the wells formed in the gel because the DNA is negatively charged and it would try to move through the gel to get away from the negative side of the electric current. This allows the scientists to see it’s behavior as it moves through the gel as the smaller proteins move more quickly than the larger ones. Since DNA is colorless the scientists stain the sample in order to visualize the protein and then they can compare the sizes and patterns of the three flowers to the sizes and patterns from the plant in the…
1.) Test for viscosity: Since DNA molecules are long strands that anneal to each other, they can be very viscous in liquid if they're at a high enough concentration. If I notice the sample sticking together while pipetting it, I'll often know that I have a lot of DNA in the sample.…
The purpose of the experiment was to learn what the process was to extract DNA. You also learned the characteristics of DNA and go to observe them.…
Cell and molecular biology is a science based on the various systems of a cell resulting to its regulation, maintenance and function. Many of these systems involve genetic information hence the study of the DNA is an essential part of this field. To able to analyze DNA, it must first be isolated and purified from its natural environment filled with biological molecules and compounds that cause physical or chemical interference in an experimental set-up. Several protocols have been established to efficiently extract DNA, one of which, the CTAB method, was performed and studied in this exercise. (De la Parte and Dita, 2014)…
sample of DNA obtained / leucocytes / from mouthwash / hair / other named source…
Earlier, my partner and I explained to the kid that we would be extracting DNA from a strawberry, and that this same DNA stuff was in everyone’s body. But I guess it was too much for him to handle because as soon as the white gunk formed he sprinted down the hallway. Once I consoled him and re-explained the lab, he exclaimed “Can I see my own DNA?” My emotions of utter disbelief and excitement came bubbling out of me as I said “Sure! Let’s get started.” This kids name was Ben. And Ben along with some of his friends, were the middleschoolers I spent the summer of 2016 scaring and exciting about chemistry at Francis Tuttle.…
Introduction: Lipids, nucleic acids, carbohydrates, and proteins are essential parts of daily life. First, lipids are organic compounds made up of glycerol that serve as long-term energy storages. These lipids are insoluble in water and are extremely effective storages because they are not easily metabolized. Additionally, carbohydrates are a type of biomolecule made up of monosaccharaides (simple sugars). These sugars are used to produce energy in reactions as well as serve as structural materials. Proteins also serve as structural materials, and are made up of amino acids, which are important for every day functions. Additionally, proteins serve the purpose of transporting, catalyzing reactions, and signaling cells. Lastly, nucleic acids are important for the genetic inheritance of an individual. Nucleic acids are made up of nucleotides, and when these nucleotides come together in mass amounts they form either DNA or RNA. With that information in mind, the purpose of this lab is to design and conduct an experiment that can determine the biomolecules found in a gelatin solution. If Sudan III and Biuret’s reagent react with the gelatin solution, then it is an indicator of the presence of lipids and proteins.…
Purpose: The purpose of this lab experiment is to see if this particular type of fruit which in this case is a strawberry contains DNA. Using materials such as a Ziploc bag to help keep the entire strawberry in one place while it gets smashed and test tube to help better see the DNA and break down of the liquid in the left over strawberry sediments.…
3) Massage solution and strawberry mix for an additional amount of time (remembering to get as few bubbles as possible from massaging)…
They are several steps of extracting DNA from strawberry cells. First, you want to ensure that you all have needed materials and are aware of all safety precautions. To being the procedure you start by placing one strawberry in a zip lock baggie making sure all air is sealed out of the bag. To burst the cells of the strawberry you must smash the strawberry with your fist for 2 minutes. After, you have smashed the strawberry you must add 10 ml of extraction buffer to the bag and carefully seal the bag, making sure all air is sealed out. Next, you must smash the strawberry and extraction buffer for a minute. When the both the strawberry and extraction buffer is mixed throughout you must filter the substance through a cheesecloth into the funnel which is connected to the test tube. Fill the test tube 1/8 full and discard of the extra strawberry mixture. After, the test tube is filled with the mixture you must add ice-cold alcohol until the test tube is halfway filled.…
The purpose of the experiment is to measure the amount of DNA extracted from a strawberry. In the experiment, we measured the absorbance of different concentrations of Methylene Blue. The data collected by our group is presented on Figure 1 and the average absorbance measured by whole class is stated on Figure 2. Table 3 shows the measurement on the amount of strawberry DNA extracted.…