intro to lipids (10) Flashcards
carbons in TGs vs carbons in carbs, which ones have a lower oxidation state?
the carbons in triglycerides
how many kcal/gram in carbs?
4 kcal/g
how many kcal/gram in protein?
4 kcal/g
how many kcal/gram in fat?
9 kcal/g
how many kcal/gram in alcohol?
7 kcal/g
why do carbohydrates have twice the dry weight as TGs?
because TGs are stored in an anhydrous state whereas cabs are bound to water
describe the double bonds in polyunsaturated fatty acids
the bonds are neither adjacent nor conjugated
this allows the structure to not be as easily oxidized
also the double bonds are almost always separated by a methyl group
why type of fatty acid is the following describing?
“ highly flexible, energetically favorable”
saturated fatty acids
which will have a lower melting temperature?
a TG with side chains containing double bonds or without double bonds
a TG with double bonds with have a lower melting point (their double bonds interfere with packing)
what is the common name for C14?
myristic
what is the common name for C16 with no double bonds?
palmitic
what is the common name for C16 with 1 double bond?
palmitoleic
what is the common name for C18 with no double bonds?
stearic
what is the common name for C18 with 1 double bond?
oleic
what is the common name for C18 with 2 double bonds?
linoleic