General Biology Biochemistry

Organic Chemistry

Organic =

• Matter which is produced by living things

• Contains carbon

Before we focus on organic compounds…lets identify the concept

of inorganic• Non living• Never alive• Does not contain carbon.• Needed for life• Autotrophs organize these into organic

compounds….

What are some important INORGANIC compounds?

• H2O• O2

• CO2

• Ca, Fe, P, Mg, K, Zn (minerals)

• NO3-

(nitrates)

OXYGEN=Common name

• Molecular formula=O2

Structure:O=O

Water = polarity• Oxygen has a slight negative charge• Hydrogen has a slight positive charge

• Polar atoms easily attract each other

Back to ORGANIC molecules• Carbon Compounds• Recall that Carbon forms 4 bonds• Readily combines with other atoms• Combines with itself as well.• Produced by autotrophs and heterotrophs

c

Carbon forms Chain molecules

                       

Carbon forms Branched Chain molecules

                  

Carbon forms Ring molecules

             

Organic compounds form closed rings along with the branches of the rings are called aromatic

compounds. The rings are formed with 6 carbon atoms only. As the name suggests, they give off very strong aroma. The number of variation of

ringed compounds is endless. Most of the perfumes and pleasant odors from fruits and

flowers are due to such aromatic compounds.

Typically Organic Molecules are MACROMOLECULES(big molecules)

C3032 H4816 N780 S8 Fe4

hemoglobin

Four Important Organic Macromolecules

All are Synthesized the same way… they are made of smaller subunits..put together by dehydration synthesis

Dehydration synthesis- a process where H2O is lost when monomers combine to form long

chains called polymershttp://www.youtube.com/watch?v=b7TdWLNhMtM

http://www.youtube.com/watch?v=UyDnnD3fMaU

moleculescompounds

atomssubatomic

quarks

So the focus this week is on ORGANIC Macromolecules

End

Questions• Draw the molecular and structural formula for

carbon dioxide.

• Is this an organic molecule?• How will this compound bond?• What does dehydration synthesis mean?• List 4 properties of carbon• What is a buffer?• What does polar mean? (do not refer to a

bear)