Soap bubbles are formed from detergent solutions (like SDS, sodium dodecyl sulfate). These bubbles are like inside-out bilayers with the hydrophobic tails are out towards the air. Explain the physical basis and structure for the formation of soap bubbles.
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Soap bubbles are formed from detergent solutions (like SDS, sodium dodecyl sulfate). These bubbles are like inside-out bilayers with the hydrophobic tails are out towards the air. Explain the physical basis and structure for the formation of soap bubbles.
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- The lipopolysaccharide of Gram-negative bacteria is composed of the following EXCEPT: Phospholipid Lipoteichoic acid Polysaccharide O-PolysaccharideA Transmission Electron Microscopy image of Gold nanoparticles is shown below. Name a physical or chemical property that changes when gold is prepared as nanoparticles below 50 nm? Explain why. 20 nmA mixture of lipids containing phosphatidic acid, cholesterol, testosterone, and phosphatidylcholine was applied to a hydrophobic interaction chromatography column. The column was washed with a high salt buffer and the lipids were eluted with decreasing salt concentrations. In what order would the lipids be eluted from the column? Explain your answer.
- Which lipid sample (butter/oil is soluble or miscible in water? Explain.How are detergent molecules similar to phospholipid molecules in plasma membranes? Explain the mechanism that makes it possible for detergent molecules to get oil out of clothes. Include the terms hydrophobic and hydrophilic in your explanation.When a small amount of the detergentsodium dodecyl su lfate is dissolved in water, the detergent ions enter the solution as monomeric species. As more detergent is added, a concentration is reached (the critical micelle concentration) at which the monomers associate to form micelles. The critical micelle concentration of SDS is 8.2 mM. The micelles have an average particle weight (the sum of the molecular weights of the constituent monomers) of 18,000. Calculate the number of detergent molecules in the average micelle.
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- A mixture of lipids containing phosphatidic acid, cholesterol, testosterone, phosphatidylserine, andphosphatidylethanolamine was applied to a hydrophobic interaction chromatography column. Thecolumn was washed with a high salt buffer, and the lipids were then eluted with decreasing saltconcentrations. In what order would the lipids be eluted from the column? Explain your answer.A can of cola consists mostly of sugar dissolved in water, with some carbon dioxide gas that makes it fizzy and makes the pH less than 7. Describe the cola using the following terms: solute, solvent, acidic, aqueous solution.Which lipid sample is soluble or miscible in water? Explain.