Although we use pre-cast gels in this lab it is common practice to make your own polyacrylamide gels in a laboratory. How much bis-acrylamide (in grams) should you use to make 5 mL of a 5% bis-acrylamide solution ? We tyrically stere rupning buffor (used in SDS RA CELIN HOY

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Q: 5. What criterion is used for the purity of a sample of caffeine?

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Q: What volume of a 250 µg/mL of a buffered solution of DNA is required to deliver 5.0 µg of DNA?

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Micelles and Biological Membrane

Micelles are the type of lipid molecules that organize themselves in spherical shape in aqueous solutions. The production of the micelle is a reply to the amphipathic behavior of fatty acids. It means that they consist of both hydrophobic regions and hydrophilic regions. In micelles, polar head groups (hydrophilic groups) produce an outer layer associated with water whereas nonpolar tails (hydrophobic groups) are organized in the interior.