A Process to D Y E for. Lab 6: Molecular Biology Part A. In these two labs (Part A and B) we will be using a separation technology called Gel electrophoresis . Gel - we use a gelatin Agarose Electro - using electricity Phoresis - means ‘to carry across’.
Lab 6: Molecular Biology
In these two labs (Part A and B) we will be using a separation technology called Gel electrophoresis.
Gel- we use a gelatin Agarose
Electro- using electricity
Phoresis- means ‘to carry across’
You are a lab technician mixing up a batch of stain (mixture of various dyes) for one of the researchers in your lab.
You had started making a large batch when you were interrupted during the procedure.
When you returned to the stain, you could not remember if you had added all of the components (geez- pay attention to your job, loser)…..
Rather than waste the whole batch of stain and start over, you will employ gel electrophoresis to determine if all of the dyes are present in the mixture.
Next, you will cover your gel with an electrolyte buffer…this is a liquid that will conduct electricity.
Using a micro-pipette, you will load 10 micro-liters (µL) of each dye into a different well in the gel.
Questionable Mixture goes in the last lane
Also, each dye’s molecules have a molecular weight….the heavier the molecules, the slower they will move across the gel and vise versa
Once you have loaded all the wells with the correct dyes, it will look like this…
You will have a positive electrode at one end and a negative at the other…
When you turn the electricity on, the molecules in the dye will begin to move across the gel….if the molecules have a negative charge, they will move toward the positive and vise versa.
So first, let’s hypothesize over what you think will happen with each dye when the electricity is turned on
First make a Table of Contents entry and write the title of this lab on the page you are using for Part A.
Next, write the purpose for this lab…..
Lab 6, Gel Electrophoresis Part A
Purpose: to understand the principles and practice of gel electrophoresis. Also, to demonstrate separation of molecules based on charge and size.
Underneath Purpose, write Dye Hypothesis: and create the following table:
Using the pictures of the dye’s molecules, hypothesize if you think the charge of the molecule is neg. or pos. AND determine in order which dyes you think will travel farthest to shortest distance.
THEN after your filled in table….write Pre Lab Question: and write answers with complete sentences to the pre lab question.
AND- Create your Data Collection table to fill in tomorrow…..