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- Directions: Draw each structure of the following fatty acid indicated below. 1. Saturated fatty acid with 18 carbon atoms.Directions: Draw each structure of the following fatty acid indicated below. 5. Polyunsaturated fatty acid with 18 carbon atoms and three double bonds.Directions: Draw each structure of the following fatty acid indicated below. 4. Monounsaturated with 16 carbon atoms.
- Structures PLEASE DRAW OUT THE FATTY ACIDS - Hydrocarbon chain atoms DO NOT need to be labeled, everything else does. Common name Symbol Lauric acid 12:0 Myristic acid 14:0 Palmitic acid 16:0 Stearic acid 18:0 Arachidic acid 20:0 Palmitioleic acid 16:1 △9 Oleic acid 18:1 △9 Linoleic acid 18:2 △9,12 a-Linolenic acid 18:3 △9,12,15 g-Linolenic acid 18:3 △6,9,12 Arachidonic acid 20:4 △5,8,11,14Select the correct statement about unsaturated fatty acids: 1. Unsaturated fatty acids have extra nitrogen atoms in their hydrophobic tails compared to saturated fatty acids 2. Unsaturated fatty acids have multiply bonded carbons in their hydrophobic tails compared to saturated fatty acids which have only single bonded carbons 3. Unsaturated fatty acids have no bends in their hydrophilic fatty acid tails 4. Unsaturated fatty acids have relatively more hydrogen atoms in their hydrophobic tails compared to saturated fatty acidsGiven the structure of the lipid. huan لما • To which group does this lipid belong? Triacylglycerol} • Is it saponifiable or non-saponifiable? O N-H H w {Choices: Eicosanoid, Glycerophospholipid, Glycolipid, Sphingophospholipid, Steroid, Terpene,
- Match lipid structures in column A with its lipid type in column B. esters of fatty acids with long chain alcohols one or more double C=C bonds ✓only single C-C bonds glycerol backbone with esters of fatty acids sphingosine-containing lipid ✓ carbohydrate is bound to a lipid structure the structure contains hexadecahydro-1H- cyclopenta[a]phenanthrene ring glycerol backbone containing fatty acid esters with phosphate group A. unsaturated fatty acid B. glycolipid C. waxes D. steroids E. saturated fatty acid F. sphingolipids G. glycerolipids H. glycerophospholipidsFigure 1 shows the melting temperature vs chain length of stearic acid, i.e. octadecanoic acid. 90 80 - Stearic acid 70 60 40 30 Room temperature 20 10 -10 -20 4 6 8 10 12 14 16 18 20 22 24 Number of carbon atoms Figure 1 (i) What is the appearance of stearic acid at room temperature? (ii) Where would the melting temperatures of the following fatty acids, oleic acid (cis-9- Octadecenoic), linoleic acid (cis,cis-9,12-Octadecadienoic), and linolenic acid (All cis- 9,12,15-Octadecatrienoic), fall on the Figure 1? Plot and indicate their relative locations. Briefly explain why. Temperature ("C)An illustration of a simple triacylglycerol is given. Choose which type of fatty acid is described by each of the given phrase Choices: A, B, C (Refer to picture) 1. a hydrocarbon chain that bends once 2. a polyunsaturated fatty acid chain 3. cannot be saturated by vitamins 4. absorbs the highest number of iodine 5. can be completely saturated by an I2 molecule
- A. Identify the following fatty acids present in fats and oils by their common names. Acid Common name 1. HO- H;C (CH2);0- 2. H3C (CH2)12- -OH H,C (CH2)14-Ö-OH 3. H,C (CH2)16- -OH 4. H3C(CH2)18 -HO- 5. 6. Which of the above is the most abundant fatty acid? 7. What is the general formula of a saturated fatty acid?Describe the four functional groups of carbon 2 based on a typical saturated fatty acid.Modify isoleucine to show the predominant forms at pH 1, 7, and 13. Isoleucine has, values of 2.4 (carboxyl group) and 9.7 (amino group). Isoleucine at pH 7 Isoleucine at pH 1 CH3 CH₂ + H₂C CH +H₂N- C H Incorrect Isoleucine at pH 13 Incorrect H₂C H₂N- CH₂ | CH₂ CH c- C H 0 ĭ Incorrect H₂C +H₂N-