LECTURE                       BUILDING BLOCKS OF LIFE

In this lecture you will learn:

THE PHYSICAL BASIS OF LIFE
The difference between living and non-living things has been a central mystery to people for most of history.  Part of this problem was the belief that there was a fundamental difference between living things and non-living things and that organic molecules can only be produced by organic beings.

What they missed was that organic molecules flowed naturally from inorganic ones and this was shown in 1828 when Wohler produced the first organic compound- urea-  from inorganic materials.

This opened a floodgate of experimentation by "organic chemists" to first 1. Take apart organic molecules and determine the chemical composition and then 2. put them back together


CHARACTERISTICS OF LIFE

1. organized systems which require energy
2. organized systems which require "raw" material from their surroundings to build, to repair damage and to reproduce.
3. reproduction which is the hallmark of a living thing

ENERGY
RAW MATERIALS
REPRODUCTION
AT LEAST LIFE ON EARTH all life uses the same few building blocks, the same organic molecules.  The difference between living things is the variation in the building plan.   
ORGANIC MOLECULES

1. all contain carbon
2. can form a straight, branched chains and closed rings
3. can be joined by single or double bonds. ( double bonds means fewer hydrogens and that means it is "unsaturated")

SUMMARY:  THE BUILDING BLOCKS AND WHAT THEY MAKE

a. amino acids -> proteins 
b. sugars --> carbohydrates 
c. nucleotides --> DNA/RNA
d. fats --> lipids, cholesterol, steroids

ABSOLUTELY FABULOUS
WEBPAGE SHOWING 
THE BUILDING BLOCKS
click HERE
THE SECRET TO THOUSANDS OF DIFFERENT ORGANIC MOLECULES IS REPETITION.

http://www.chemistryland.com/ElementarySchool/BuildingBlocks/BuildingOrganic.htm
SUMMARY TABLE OF THE BUILDING BLOCKS
sp