Ap Biology Discussion Notes
Friday 09/12
Goals for Today:
1. Be able to describe and compare the
building, breaking, components, and
functions of Carbohydrates, Lipids,
and Fats.
Question of the Day:
Who (What) am I?
Characteristics of Carbohydrates
(composition, uses, examples, calories)
RATIO?
Carbohydrate Foods
Glucose—a monosaccharide
Forming a Disaccharide—
Dehydration Synthesis
Glycosidic Bond
Another look...
Some Polysaccharides
(carbohydrate polymers)
Characteristics of Lipids
RATIO?
High Fat Foods
“GOOD” Fat
Name That Molecule
Lipid “polymers”
Let’s Build one! 
Saturated Fats
WHY IS IT
CALLED A
SATURATED
FAT?
One of these fatty acids is not like the
others!
Is it fatty acid #1?
Or is it fatty acid
#2?
Maybe it’s fatty
acid #3?
Please welcome…..The
Phospholipid!!!!!
“Phosphate Head”
Polar, hydrophilic
“Fatty Acid Tails”
Nonpolar, hydrophobic
A phospholipid bilayer
Outside the cell
The
Membrane
Inside the cell
Put it all together….
One More Molecule
Extra Credit
Species of the Day 9/11:
Monarch: Danaus plexippus
. Monarch caterpillars feed on Milkweed
plants which contain high levels of
cardenolides, a steroid toxin. This chemical
acts as an non-competitive inhibitor of
sodium/potassium enzyme pumps in animal
cell membranes.
What kind of enzyme is the sodium
potassium pump?
Species of the Day 9/12
House Sparrow: Passer domesticus
Species of the Day 9/12
House Sparrow: Passer domesticus
Species of the Day 9/12
House Sparrow: Passer domesticus
Species of the Day 9/12
House Sparrow: Passer domesticus
What do you know about the Proteins,
Carbohydrates & Lipids in the body of this
Sparrow?
 Could you say how they are built/broken?
 What elements or building blocks they contain?
 What their functions are?