C: How many simple and mixed triacylglycerols can be constructed from glycerol, stearic acid, and oleic acid? Draw the structure of triacylglycerols which will have the lowest and highest melting point 3. Following are the melting points of 18-carbon fatty acid Stearic acid Oleic acid Linoleic acid 70 °C 13.4 °C -5.0 °C Linolenic acid -11.0 °C Answer following: a: What do you mean by the melting point of lipids? and name the following b: What could be the reason for the differences in melting point?
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- The pH vs charge graph for a triprotic amino acid is shown below. Please answer the following questions about the amino acid. 2 1.5 1 0.5 -0.5 -1 4 6. 8 10 12 14 pH a. Which of the following triprotic amino acids is this? [ Select ] b. What is the isoelectric point? (Please select the appropriate range in which the isoelectric point falls) (Hint - look up the pka values in the pKa table for amino acids, which was in video one of today's lecture) [ Select ] c. What form of this amino acid dominates at a pH of 8? Please select the correct form for each ionizable group. Alpha amino [ Select ] Alpha carboxyl [ Select ] R [ Select ] Net ChargeNumber 1cephalin phospatidyl ethanolamine Yields 2 fatty acids, phosphoric acid, glycerol, and choline upon hydrolysis Yields 2 fatty acids, phosphoric acid, glycerol, annd serine uponn hydrolysis
- 1. The figure below shows the Fischer projection of an L-aldohexose. T or F O. НО H- Но H- Но- ČH2OH Naturally occurring saturated long-chain fatty acids are usually in trans- configuration. 2. T or F 3. N-acetylglucosamine is commonly found in glycosaminoglycans. T or F 4. The isoelectric point of isoleucine is lower than that of histidine. T or F 5.. At pH 7, all amino acids stop migrating in isoelectric focusing. T or F 6. The following amino acid is a L-valine. T or F СООН H-NH2 CH-CH3 CH3 7. Salting out is a process to remove salts from proteins. T or F 8. There are five carbons in a pyranose ring. T or F 9. Hydrophobic interaction can be found in protein and DNA. T or F RNA is a polymer consisting of nucleosides joined together by phosphodiester bonds. 10. T or F 11. There are 3.6 base pairs in one turn of DNA helix. T or FThe skeletal structures of the two amino acids, glycine and lysine, are given below along with the values of the relevant acid dissociation constants (pKa). NH,* PK, - 10.79 - HạN*CH2CO,¯ S pK¸=2.35 (CH2)4 - H3N*CHCO,- pK,=9,78 lysine (Lys) glycine (Gly) pK, = 9.18 pK, - 2.16 For an aqueous solution of glycine alone, calculate the value of pH at which the ratio of the concentration of neutral glycine zwitterions to the concentration of protonated cation is 102. On your under each of the following conditions. In the blank, provide the total charge of the dipeptide. (Example: If the charge is two plus write the answer simply as 2, if the charge is negative two write the answer as -2). draw the skeletal structure of the dipeptide, Lys-Gly, when it is solvated in an aque us solution i. pH= 1 ii. pH= 12Given the following compounds, assemble the structure of the lipid constituent for the cell membrane appropriate to study the following: a. a thermophilic bacteria thriving in a hot spring b. a hepatocyte of a sea lion in the artic ocean c. a frog neurocyte
- Rank the following fatty acids from lowest melting temperature to highest melting temperature. A -0-c B-0-c -0-2 D-0-84 OBThe pH vs charge graph for a triprotic amino acid is shown below. Please answer the following questions about the amino acid. Net Charge 0 2 4 Alpha amino [Select] 6 R [Select] pH a. Which of the following triprotic amino acids is this? Alpha carboxyl [Select] 8 10 12 [ Select] 14 1 0.5 0 -0.5 -1 b. What is the isoelectric point? (Please select the appropriate range in which the isoelectric point falls) (Hint - look up the pKa values in the pKa table for amino acids, which was in video one of today's lecture) [Select] -1.5 c. What form of this amino acid dominates at a pH of 14? Please select the correct form for each ionizable group. -2Consider the fatty acid. Which of the designations are accurate for the fatty acid? 8,11-octadecadienoic acid 17:2(Δ8,11) ω‑6 fatty acid 18:2(Δ9,12) 18:2(Δ6,9)5) Describe the three areas of focus for reducing cholesterol in the body. 6) Complete the table below with the 5 major groups of lipids (based on combining Lipids Video 1 and Video 2) including a description of their basic structure, an example of each, and the function specific to the example you have provided. Type of Lipid Basic Structure Example FunctionLipid solubility is an important parameter that determines the predicted effectiveness of new pharmaceutical medications ahead of their release for public use. Which of the following provides the best explanation for the relevance of lipid solubility in medications? A B с D High lipid solubility will ensure the presence of energy-storing lipid molecules to support the chemical functions of the medication. Low lipid solubility will allow the medication to remain longer in the body, increasing its effectiveness. Low lipid solubility will facilitate more favorable interactions with enzymes in the body. allowing the medication to act more quickly. High lipid solubility will allow the medication to more readily diffuse through the cell membrane.The pH vs charge graph for a triprotic amino acid is shown below. Please answer the following questions about the amino acid. 2 1.5 1 0.5 -0.5 -1 4 8 10 12 14 pH a. Which of the following triprotic amino acids is this? Histidine b. What is the isoelectric point? (Please select the appropriate range in which the isoelectric point falls) (Hint - look up the pka values in the pKa table for amino acids, which was in video one of today's lecture) 7-8 c. What form of this amino acid dominates at a pH of 8? Please select the correct form for each jonizable group. Alpha amino NH3+ Alpha carboxyl СОО- R| NH Net ChargeSEE MORE QUESTIONS