Name: ________________________________ Date: ________________ Pd: __________
Lipids
 Lipids are a class of nutrients that includes:
o
o
o
o
 Composed of _______________, ________________, and _________________.
 Lipids are ____________________________ (insoluble in water)
Characteristics of Lipids
 Greater than 2:1 ratio of H:O
 Monomers are __________________________ and _________________.
 _________________ storage molecules
 _______________________________ part of cell membrane
Fatty Acid Structure
 ________________________ group forms the
acid
 “R” group is the
________________________________ chain.

Fatty acids vary in carbon chain lengths, degree of unsaturation, and
number of double bonds.

Saturation affects the physical _______________________________ of the fat
and its storage properties
Saturated vs. Unsaturated
 Saturated fatty acids carry the __________________________ possible
number of ______________________________ atoms.

Unsaturated fatty acids are missing at least _____________________________
atoms and have at least one __________________________________________.
o Monounsaturated fatty acid

Have _________ double bond
o Polyunsaturated fatty acids

have at least _________ double bonds.

Saturated fats - _________________ at room temperature.

Polyunsaturated fats - __________________ at room temperature.
Glycerol
 an _______________________ composed of a
three carbon chain.
Forming a Fat
 Join together a _______________________ and_____________________.

___________________________________ reaction joins them together.
o _______________ is removed
Triglycerides
 composed of _____ fatty acids attached to a _____________
* the diagram on the previous page shows a triglyceride.
Phospholipids
 contain ________________, ___________ fatty acids and a
___________________ group.

Soluble in both water and fat

Roles of phospholipids
o Transport lipids through Plasma membrane
o Make up the cell membrane
Sterols
 cholesterol, vit D, testorone

Multiple _________________________________ structure.

Found in plant and animal foods
o ____________________________________ is found in animal foods only meat, eggs, fish, poultry and dairy products

Roles of sterols
o Needed to make bile acids, sex hormones, adrenal hormones and
vitamin D
o Component of cell ___________________________