4. Amphiphilic Lipids. Detergents are small amphiphilic molecules that tend to form micelles in water.(a) Draw the structures of sodium dodecyl sulfate (SDS) and Triton X-100(b) For each drawn detergent, indicate which portions (ends) of the molecules are hydrophilic andhydrophobic. Justify your answer (explain why hydrophilic vs hydrophobic).(c) Draw the micelle structure for one of the detergents.(d) Why does the detergent form a micelle and not a bilayer? Why do detergents denature proteins andremove grease from your clothing?

Ionic detergents contain anionic or cationic head group long with their hydrophobic tails being…

Answered: 4. Amphiphilic Lipids. Detergents are…

Biochemistry

9th Edition

ISBN:9781319114671

Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Chapter1: Biochemistry: An Evolving Science

Section: Chapter Questions

Problem 1P

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9. What is sphingosine? For lipids with a sphingosine backbone, to what carbons are the other functional groups attached? How many acyl tails attach to sphingosine to make a sphingolipid? 10. Compare and contrast the structure of sphingomyelins with glycerophopholipids. 11. Which of the following statements is true? Please briefly explain why the false statements are false. A. Phosphatidylcholine and sphingomyelin are evenly distributed at the two monolayers of plasma membrane. B. Phosphotidylserine is enriched at the inner leaflet of transport vesicles. C. In sphingolipids, the fatty acid tail is linked to its backbone via an ester bond. D. Common glycerophospholipids often carry positive charges at physiological pH. E. Lipases are enzymes that can cut structural lipids at different locations
Please answer all parts with explanations. This is biochemistry
Number 1
1. Most globular proteins are denatured and lose their activity when briefly heated to 65°C. However, globular proteins that contain multiple disulfide bonds often must be heated longer and at higher temperatures to denature them. Furthermore, upon cooling of the denatured proteins, the activity of these proteins can often be restored. Explain these properties.
[Select] [Select] -0-P=0 0 CH-CH₂ C=O (CH₂)12 (CH₂)10CH 3 CH 3 3-3-3-3- + Ọ–CH,CH,N(CH3)3 CH DE P
2)
6. A control phospholipid membrane is isolated in which the phospholipid tails all have an 18-C chain length and are comprised of a 50:50 mixture of saturated and unsaturated tails. In addition, about 25% of the lipids are fluorescently labeled on the head groups. a) Draw a single plot of Fluidity vs. Temperature that contains the expected curves for: Control phospholipid (line- -) Control supplemented with 18-C saturated phospholipids (dashed line - Control supplemented with 16-C chain length (dotted line • • • • • • ) b) Draw a single plot of the Fluorescence Intensity vs. Time that contains the expected curves of a Fluorescence Recovery After Photobleaching (FRAP) using the same samples as in (a) above. The FRAP experiment is conducted at the same temperature for each sample (which is the Tm of the of the control phospholipid).
Please help answer the question on natural polymers polysaccharides 1) compare and contrast the structure and function of startch and glycogen proteins 1) sketch the two amino acids. Contrast the polarity of the side chains Dna 1) what are the predominant groups in dna 2) the covalent linkage between nucleotides is called a phosphodiester bond. Sketch the linkage
4. Predict the products (draw their structures) of the fatty acid with the reagents below. (a) + CH;OH HO. (b) OH HO.
7. Answer and explain
1.After a meal, most dietary fat is transported to the bloodstream in particles known as -chylomicrons -high-density lipoproteins - low density lipoproteins -very-low-density lipoprotein 2.All of the following statements about linolenic acid are correct EXCEPT: -It is found in a wide variety of -foods. It is 18 carbons in length. -It is an omega-3 fatty acid. -It is essential. 3.Triglycerides perform which of the following functions in the body? -All answers are correct Provide -energy Insulation -Shock absorption 4.Which of the following is a benefit of consuming omega-3 fatty acids? -They may play a role in the prevention and treatment of heart disease. -They may decrease the risk of constipation. -Omega-3 fatty acids have less kcalories than saturated fats. -All of the answers are benefits of omega-3 fatty acids. 5.Which of the following is true about the digestion and absorption of protein? -Amino acids travel to the liver via -the portal vein. Protein digestion begins in the…
1. Theoretically, a protein could assume a virtually infinite number of configurations and conformations. Suggestseveral features of proteins that drastically limit the actual number. 2. What are the greatest structural features that differentiate sphingolipids from phosphoglycerides? 3. High levels of glucose-6-phosphate inhibit glycolysis. If the concentration of glucose-6-phosphate decreases,activity is restored. Why?

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