What elements are Lipids composed of Carbon C Hydrogen H Oxygen O A whole lot of Hydrogen Function in Living Organisms Lipids usually serve one of three functions 1 Energy storage ID: 929718
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Slide1
Lipids
Long term energy storage
Slide2What elements are Lipids composed of?
Carbon (C)
Hydrogen (H)
Oxygen (O)
A whole lot of Hydrogen!!!!!
Slide3Function in Living Organisms
Lipids usually serve one of three functions:
1. Energy storage
When
carbs
have been used up we use fatty acids for energy.
Slide4Function in Living Organisms
Lipids usually serve one of three functions:
2. Structural
support in cell membranes (phospholipids
)
Slide5Function in Living Organisms
Lipids usually serve one of three functions:
3. Serve as messengers
Steroids are lipids that carry messages through the bloodstream.
Slide6Lipid Monomers?
Lipids do not have true monomers
Slide7Lipid Polymers
1 Glycerol
+
3 Fatty Acids
=
Triglyceride
Glycerol
3 Fatty Acids
Slide8Lipid Polymers
A common lipid that contains fatty acids is a
Triglyceride
.
They are composed of
Glycerol
linked to
three fatty acids
(in the shape of an “E”)
by condensation reaction
.
Slide9Types of Lipids
Lipids DO NOT dissolve in
WATER. Why?
Lipids are
1.
Fats,
2.
Oils and
3.
Waxes
Water is polar and lipids are NON-POLAR, therefore Lipids do NOT dissolve in water.
“Like dissolves Like”
Slide10Types of Fatty Acids
1. Saturated
OR
2. Unsaturated.
Fatty acids are classified as:
Slide11Saturated Fatty Acid
NO DOUBLE BONDS between carbons (C)!! (saturated with Hydrogen)
Usually solid at room temperature,
Most come from animal products
.
Can you think
of some examples?
Slide12Unsaturated Fatty Acids
Have
double bond(s) in the carbon chain and are not full (saturated) with hydrogen.
Most unsaturated fats are liquid at room temperature (oils)
Usually come from plants
Can you think of some examples?
Slide13Phospholipids