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Gel electrophoresis key terms
Gel electrophoresis process ib bio
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Procedure To begin with this project, a gel electrophoresis chamber must be built. In this chamber, a plastic box will be the chamber, a stainless steel wire will replicate electrodes, batteries will be the power outlet, and the wells will be replicated by using a styrofoam comb. Hold the plastic box horizontally. First cut two separate pieces of the stainless steel wire with your wire cutters (Remember the gauge must be no smaller than 18 and no larger than 24!). The wire should be a few centimeters longer than the actual width of the plastic box. Shape the wire so they have a hook that hooks over the sides of the width of the box. When you have hooked the wires, put one at the bottom being your negative electrode, and the other one at …show more content…
The buffer solution will be a 1% solution of baking soda in water. To make this, combine 2 grams of baking soda with 200 mL of bottled water in a bowl and stir well. To make a 1% agarose gel solution for the gel electrophoresis, combine 1 g of agarose with 100 mL of your buffer solution in a microwave-safe bowl. Heat the agarose solution in a microwave to dissolve the powder. Stop the microwave every 10-15 seconds to stir the solution. After you see that the solution is starting to bubble, remove it from the microwave. At this point the solution is now translucent. Remember to watch the agarose solution closely and remove it carefully. When it gets hot, bubbles will form and you will be able to remove it. Since we know need to insert the comb in the liquid gel, remove the stainless steel wire electrodes form the chamber. At this point, insert your styrofoam comb into either end of the gel, while leaving approximately 5 millimeters between the comb and the end of the box. Pour the agarose solution into the gel chamber, till the comb teeth are submerged by 10 millimeters. If the gel is too thick, the project may not have any results that can be
Rinse your beaker thoroughly to wash any excess powder. 12. Repeat steps 7-11 3 more times for reliability. To make sure the temperature still stays hot by continue heating the water a little bit using the hot plate. 13.
We finally took 1ml of the 0.01% solution from test tube using the glucose pipette and adding it to test tube 4, we then used the H2O pipette and added 9ml of H2O to test tube 4 creating 10ml of 0.001% solution.
7.) After you have heated them to the right temperatures, pour the excess water into a dry evaporating dish. ( Be sure not to get any of the substance in your solution. )
I also decided to use a wooden block to keep hold of the wire, because
Third, grab the left edge of the Kool-Aid packet between your thumb and index finger. With your other hand, begin peeling the upper-left corner until the entire top of the envelope is removed. Next, dump the contents of the envelope into the pitcher. Notice how the powder floats before settling on the bottom of the pitcher. Then, take the measuring cup and scoop two cups of sugar into the pitcher as well. At this point, adding the water is a crucial step. Place the pitcher under the water faucet and slowly turn on the cold water. If the water is turned on too quickly, powder will fly all over when the initial gusts of water hit. After the pitcher is filled within two inches of the top, turn the water off and get prepared to stir. With the wooden spoon submersed three-quarters of the way in the liquid, vigorously stir in a clockwise motion until all of the powder is dissolved.
9. When all magnesium has reacted, remove the lid and heat strongly for 5 minutes
Attach a buret clamp (located under the hood) to a ring stand. b. Rinse the burets three times with approximately 10 ml of deionized water. Tilt and rotate the buret in an almost horizontal position (don't let the water spillout!) to rinse the entire inside wall. Allow about 5 ml of water to run through the buret tip on the last rinse. c. Pre-rinse one buret with approximately 5 ml of your Unknown acid solution. Again, rotate the buret to rinse the entire inside wall of the buret as above. d. Clamp the buret in one side of the buret clamp. Place a white piece of paper labeled "Unknown acid" under this buret. Drain any remaining pre-rinse acid solution into a beaker labeled "waste solution". e. Fill this buret with your Unknown acid solution to the zero mark or slightly below it (Not above the zero mark). Make sure the tip of the buret is completely filled and contains no air bubbles. f. Pre-rinse the second buret with approximately 5 ml of standard base solution. Clamp the buret in the other side of the buret clamp. Place a white piece of paper labeled "Standard NaOH solution" under the buret. Drain remaining prerinse NaOH solution into the waste solution beaker. Fill this buret with standard
3. Turn on the power to the required voltage (I had a problem with the power pack because they kept short circuiting so I decided to use a battery pack but they would drain very quickly and could only test 2, 4, and 6 volts) and then bring the box of paper clips up so that they are touching the Iron rod
Prepare silica gel column. Add 6 g of silica gel in 20 mL of hexane to make a slurry. Block column with small piece of glass wool, add 5 mL of hexane and then add the silica slurry up to the 10 cm mark.
In a laboratory scientist will use a process called gel electrophoresis to separate DNA fragments. The DNA is cut into different sized fragments as a result from using restriction enzymes. The different sized DNA fragments are organized injected on agarose gel with an added substance that helps it glow after the test. DNA is negatively charged. Electricity is producing a positively charged are and a negatively charged area. Opposites attract and as a result the negatively charged DNA will move quickly to the positively charged area. Smaller DNA fragments will run faster the larger DNA fragments. After the electricity is turned off smaller DNA fragments will be closer to the positively charged area and the larger DNA fragments will be farther from the positively charged area. While it is glowing scientist can take a picture of the data and record the results and compare DNA samples to look for any abnormalities.
2nd step heat the mixture: Make sure the agarose dissolves. Wait until it boils and when you are going to transfer the mixture, wear gloves to avoid getting burnt. Transfer the mixture into a removable gel tray.
In a 100ml beaker place 50mls of water, measure the temperature of the water and record this initial temperature onto a table. Set the timer and add one teaspoon of Ammonium Nitrate to the water, stir this continuously until the Ammonium Nitrate has dissolved.
During the incubation, in an Erlenmeyer flask, 1X Tris Acetate EDTA (1 mL) and powder agarose (0.4 g) were dissolved in dH2O (49 mL). Then the solution was microwave for 2 minutes and allowed to cool to room temperature. Then SafeRed concentrate (2.5 µL) was added to the solution and it was poured into the gel box and allowed to solidify.
Pour the dish soap into the water and mix it without letting bubbles form (that's for later!). Put the glycerin or corn syrup into the mix and stir. You can use it right away, but some bubble-lovers recommend covering and letting the bubble mix sit overnight.
Then investment powder is poured into the flask and the flasks are burned so that the wax is melted and investment powder becomes harder.