Lipids Flashcards
Lipids
Fats
Hydrophobic and non-polar
Triglyceride - what is it
Long term energy storage in animals and plant seeds
Eg. Adipose and plant oil
Triglyceride structure
Formed through dehydration synthesis
Glycerol and 3 fatty acids
Do fatty acids have even or odd #of Carbons
Even
Diff b/n saturated and unsaturated triglycerides
① butter (solid) vs canola oil (liquid)
② solid us liquid at room temp
③ mostly animal fat v plant oils
④ atherosclerosis heart disease vs good health
⑤linear vs kink bc double bond
Explain normal artery walls
Elastic to withstand pressure from blood leaving heart
Smooth muscles
Explain artery narrowed by atherosclerosis
Fatty plaque hardens and builds up which narrow blood flow increasing pressure
Plaque in heart = heart attack
Plaque in brain = stroke
What is the major contributor to fatty plaque?
Trans fatty acids
By bubbling hydrogen through to maximize hydrogen and solid at room temp and increase shelf life
Phospholipids
Main component of biological membranes
Cell miembrue, nuclear hembrare
Emulsifying agent like lecithin
Hydrophilic head and hydrophobic tail form belayer
Lecithin
Keeps fat and sugar from spending in processed foods
Phospholipid structue
Dehydration synthesis
(Charged) Glycerol backbone, phosphate group, choline ,
2 fatty acids (non-polar)
When phospholipids are mixed in H2O which shapes do take, they
Liposomes or Micelle
Steroids
Interlocking Carbon rings
Hormones structural component of animal cell membranes
Increases the fluidly of animal cell membranes (cholestrol)
How are steroid hormones synthesized?
Multi step enzyme mediated pathways
