Organic Molecules

What do you think are the most common elements in the human body?

(Hint: look at p. 113 in your pride book to help)

Role of Carbon

4 valence electrons free

Can covalently bond with up to 4 other atoms

Polymer

A large molecule formed when many smaller ones (monomers) bond together

Label each tab and put your name on it.

Number off 1-4 1’s carbohydrates 2’s lipids 3’s proteins 4’s nucleic acids

For your molecule find: 3 Functions 1 Example

Carbohydrates

Functions main source of energy Structural support in plants and fungi

Ex:

Lipids

Store energy (fats & oils) Important part of cell membranes

(phospholipid/cholestrol) Waterproof coverings (waxes)

Proteins

Control rate of reactions and cell processes as enzymes

Found in bones and muscles Help to fight disease (antibodies)

Nucleic Acids

Stores (DNA) and transmits (RNA) genetic information to build proteins

Lipids

Nucleotides

Carbohydrates

Functions main source of energy Structural support in

plants and fungi

Proteins

Enzymes

Enzymesbiological catalystsSpeeds up reactionsWithout them reactions would occur too slow for life

Lower the activation energy

Enzymes Enzymes provide a site where substrates

can be brought together = Active Site The fit is like a lock and key

Enzyme Regulation

Work best at a particular pH Digestion enzyme

Affected by changes in temperature Denaturization

Concentration