DNA Technology - gel electrophoresis lab Biol 100L worksheet-1

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Coastline Community College *

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C100

Subject

Biology

Date

May 4, 2024

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pdf

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8

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DNA Technology: GEL ELECTROPHORESIS Lab for Bio 100 Lab Name: Date: You are going to walk through a Simulation that introduces the steps and techniques of sorted DNA fragments called Gel Electrophoresis. Begin by opening a free lab site hosted by Harvard, if this is your first time at this site you will need to sign up (it’s free) and open M07 Lab DNA Technology – 2. Gel Electrophoresis at this link: https://www.labxchange.org/library/items/lb:LabXchange:9548bee3:lx_simulation:1 Choose Level 1 and Start simulation: Context: 1. Gel Electrophoresis is used to separate biomolecules, like DNA, according to what two properties? Size and electrical charge 2. In general, an electric current will be applied to the gel and the charged molecules with move in which direction? Towards the oppositely charged electrode 3. Since DNA fragments all have a similar negative charge they will move in which direction specifically? Towards the positive electrode 4. Which will move farther through the gel pores, smaller or larger fragments? Smaller Materials: 1. What does reagents mean? Which will be used in this simulation? Chemicals that can be used in the experiment. S1, S2, S3 solution & 1x sodium borate buffer
2. What is micropipetting equipment used for? They are used to measure small volumes. 3. What is the overall purpose of electrophoresis equipment? They sort molecules by size and charge. 4. What two pieces of other equipment will be used? Microcentrifuge & trash Predictions: Follow the directions and pull each gel to the position you think it well be at the end of the simulation and take a partial screen shot and place here:
Protocol (order) that will be used in this simulation: 1. __Prepare__ the electrophoresis box. 2. __Centrifuge___ the solution tubes. 3. Draw up solution __1__. 4. ___Pipette______ solution 1 into well 1. 5. Pipette other solutions into the remaining __wells__. 6. ___Conduct___ gel electrophoresis. Work your way through the protocol pages 1 through 6. 1. Place a partial screen shot here of the micropipette volume screen once set for use (be careful, the red number is a tenth position so you want 10.0): 2. Record which well you pipetted each sample into? Sample 1 : Well 1 Sample 2: Well 2 Sample 3: Well 3 3. Take a partial screen shot of the adjusted power supply controls, with Voltage at 130 V and time at 10 minutes (You do not want to adjust the current or power):
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