Midterm -as per course syllabus

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Presentation transcript:

Midterm -as per course syllabus Lectures 1a-6b inclusive-50 multiple choice-50 points One short answer question-10 points Lecture 5a- 29 January 2018 Most of this lecture taken from Chapters 5,7 of Rolfes et al(Understanding Normal and Clinical Nutrition(Nutrition 2104/2106 text)

Outline of lectures 5a,b Lipids classified -fatty acids -saturation -triglycerides -phospholipids -sterols

Outline of lectures 5a,b Lipids -digestion -absorption -transport

Outline of lectures 5a,b Lipids in the body -roles of triglycerides -essential fatty acids

Outline of lectures 5a.b Preview of lipid metabolism

Outline of lectures 5a,b Lipid Metabolism -fatty acid catabolism -fatty acid anabolism -triglyceride catabolism -triglyceride anabolism -cholesterol catabolism -cholesterol anabolism -phospholipid catabolism -phospholipid anabolism -regulation

More detailed comments

Lipids defined a diverse group of compounds found in all living cells, insoluble in water but soluble in organic solvents such as ether, acetone and chloroform, and which include fats, oils, triacylglycerols, fatty acids, glycolipids, phospholipids and steroids, some lipids being essential components of biological membranes, others acting as energy stores and fuel molecules for cells.

Lipids classified -fatty acids -straight hydrocarbon chain terminating with a carboxylic acid group

Lipids classified -fatty acids -saturation -saturated-no double bonds between carbons in a fatty acid chain

Lipids classified -fatty acids -diagram and partial list of saturated fatty acids -myristic acid 14:0 -palmitic acid 16:0 -stearic acid 18:0

Lipids classified -fatty acids monounsaturated-one double bond between carbons in a fatty acid chain -diagram and partial list of mono-unsaturated fatty acids -palmitoleic acid 16:1n-7 -oleic acid 18:1n-9

Lipids classified -fatty acids -polyunsaturated- more than one double bond between carbons in a fatty acid chain

-diagram and partial list of polyunsaturated fatty acids

-diagram of omega 3 vs omega 6 fatty acids

Lipids classified Polyunsaturated – a partial list Omega 6 -linoleic acid 18:2 -gamma-linolenic acid 18:3 -dihomogammalinolenic acid 20:3 -arachidonic acid 20:4 Omega 3 -alpha-linolenic acid 18:3 -eicosapentaenoic acid 20:5 -docosahexaenoic acid 22:6

Lipids classified -cis and trans configurations -diagram

Lipids classified -triglycerides -three fatty acids attached to a glycerol backbone -diagram

Lipids classified