Fats Flashcards
How many calories per gram in fats
9 gram
Some fatty acids are essential for structural function of the cells and production of ________ because they cannot be
___________
Hormones
Synthesised
What class compounds are contained in fatty acids?
long hydrophobic hydrocarbon chain and a terminal carboxylate group
What are precursors of eicosanoids?
Fatty acids
Which end do you count the bonds on the carbon chain?
Methyl end
Name some omega 3 fatty acids
Walnuts
Flaxseeds
Rapeseed oils
Name some omega 6 fatty acids
Corn
Sunflower oil
Name some omega 9 fatty acids
Olive oil
Avocado
peanuts
Almonds
What’s the difference between cis and trans fats
Trans - differently orientated in space
Cis - hydrogens on one side on of the carbon backbone
What is a triglyceride?
One unit of glycerol and three fatty acids
what are examples of eicosanoids?
Prostaglandins Prostacyclins Thromboxanes Leucotrienes Epoxyeicoatrienoic acids
What role do omega 6 eicosanoids have? Name a few
Promote blood clotting Promotes the constriction of the arteries Increase pain Increase cellular proliferation Depresses the immune system Lowers brain function Increase inflammation
What role do omega 3 eicosanoids have? Name a few
Stop blood clotting Promote dilation of arteries Reduce pain Reduce cellular proliferation Increase immune system efficiency Improve brain function Reduces inflammation
Some advantages of low fat diet
Easier to maintain body weight if energy intake is low
Lowers blood cholesterol
Some disadvantages of low fat diet
Difficult to meet energy needs when requirements are high e.g. infancy
Bulky and less palatable
Poor digestibility of fat soluble vitamins
