9/22/11 Scribe Post

It's been a busy week! We had our global warming discussion, Unit 1 test, science survey test, and Biology Day where wewatched "Planet Earth".

Today in class: we s

tarted Unit 2: Cells!

IMPORTANT THINGS FROM YOUR NOTES--The Basics of Organic Chemistry

Definitions:

-Macromolecules=biological

-Polymer=many monomers

-Dehydration Synthesis=lin

king of monomers to form polymer

-Hydrolysis=broken down with water

-Monomer=chemical subunit that serves as a building block for polymers (the legos of organic chemistry!)

****For this unit, it is a good idea to learn how to break words apart (ex: hydro=water, lysis=breaking down)

Notes:

-Every bond=2 electrons

-Carbon has 4 bonds and the ability to arrange into long skeletons

-Functional Groups are reactive and atta

ched to carbon skeletons/involved in chemical reaction

-Molecule can have 1 functional group attached or more than one

-Molecules created by bonding monomers to

gether

-Polymers broken down into monomers

-Monosaccharide (simple sugars) formula is: C6H12O6

-Disaccharides formed by dehydration synthesis of monosaccarides

-Disaccharide formula: C12H22O11

-Polysaccharides: starch, glycogen, cellulose

-Carbohydrates are hydrophilic (water-loving)

-Lipids:Fats (triglyceride)

-Lipids are hydrophobic (water fearing). This means they don't mix with water, not that they are afraid of it!

We also briefly talked about steroids.

-Steroids are classified as lipids because they are hydrophobic.

-Anabolic Steriods=variation of testosterone

-Steroids can cause many problems, a major

problem being confusion of hormones that are necessary during development.

HW:

Ch. 2 p.28-32

Ch. 3 p.36-50

Ch. 5 p.78-79

See you all tomorrow!

Anna

Next scribe: ***Eleni***