Chapter 7 - Lipids (Fats and Oils) Flashcards
(35 cards)
lipid
chemical term for fat
are lipids organic or inorganic?
organic compounds
fats and oils contain __kcal/g
9
4 main classes of lipids
1) triglyceride
2) phospholipids
3) sterols
4) lipoproteins
what are the 3 classes of lipids that are in foods and in the body?
triglyceride, phospholipids, and sterols
what is the class of lipids that is only found in the body?
lipoproteins
fatty acids are chains of ______ atoms
carbon
COOH = ______
carboxyl group
CH3 = ______
methyl group
why is chain length of fatty acids important?
chain length determines:
- absorption
- function
short chain fatty acids have ____ carbon atoms
<6
medium chain fatty acids have ____ carbon atoms
6-10
long chain fatty acids have ____ carbon atoms
> 12
3 places saturated fatty acids are found?
- animal products
- coconut and palm oils
- chocolate
saturated fatty acids are ______ at room temperature
solid
2 places saturated fatty acids are found
- plant oils
- seafood
true or false: the bonds in saturated fatty acids are single bonds
true
true or false: the bonds in unsaturated fatty acids are single bonds
FALSE: the bonds in unsaturated fatty acids are single or double bonds
unsaturated fatty acids are ______ at room temperature
liquid
what is the shape of saturated fatty acids?
straight
what is the shape of unsaturated fatty acids?
bent
cis double bonds
both hydrogen atoms on the same side of the double bond
trans double bonds
hydrogen atoms on the opposite side of the double bond
where do most trans-fat come from?
- hydrogenation
