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Lipids

Lipids. Lipid Structure. Fats, Oils, Waxes Provide energy for cells, cell structure, insulation Lipids & Proteins compose the cell membrane Cholesterol: gives cell membrane flexibility. Lipid Structure. Glycerol molecule. Fats, Oils, Waxes

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Lipids

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  1. Lipids

  2. Lipid Structure • Fats, Oils, Waxes • Provide energy for cells, cell structure, insulation • Lipids & Proteins compose the cell membrane • Cholesterol: gives cell membrane flexibility

  3. Lipid Structure Glycerol molecule • Fats, Oils, Waxes • Provide energy for cells, cell structure, insulation • Lipids & Proteins compose the cell membrane • Cholesterol: gives cell membrane flexibility • Structure (2 parts): • “Head” = glycerol • “Tails” = fatty acids • Monomer: Fatty Acid • Polymer: Lipid

  4. Saturated Fats • Long chain of C-C single bonds • Each C is “saturated” with H atoms • Solid at room temps • Very common in animal fats Lard

  5. Unsaturated Fats • Long chain of C bonds (some double bonds) • Causes the chain to be crooked • Unsaturated: Less space for H atoms • Liquid at room temps • Plant oils Coconut oil Olive oil

  6. Saturated vs. Unsaturated 1 2 3 4 5 6 7 8 18 9 17 16 15 14 13 12 11 10 18 The double bond reduces the need for more H atoms to stabilize the molecule. 1 2 3 4 5 6 7 8 16 15 14 13 12 9 11 16 10

  7. Normally, blood flows freely through a vein Blood vein RBC RBC RBC RBC RBC RBC

  8. Too much saturated fats… Blood vein RBC RBC RBC RBC RBC RBC RBC RBC RBC RBC RBC RBC RBC RBC RBC RBC RBC RBC RBC Reduced circulation… Blood clots… High blood pressure Cholesterol & saturated fats

  9. Cholesterol levels

  10. Kobe Kuiz What are the two parts of a lipid called? Which part is the “head”? Which part are the “tails”? How do small fatty acids and glycerol molecules bond to make a lipid? How do saturated and unsaturated fatty acids differ? Which lipid gives cells their flexibility? Why are saturated fats less healthy?

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