Dehydartion Synthesis 11S Glucose Combining with Fructose to Form Sucrose

Dehydartion Synthesis 11s Glucose combining with Fructose to form Sucrose

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

Hydrolosis

Dehydration Synthesis

Definition

noun, plural: dehydration syntheses

A chemical reaction that builds up molecules by losing water molecules.

Supplement

It is a type of condensation reaction in which monomers join together into polymers while losing water molecules. This process is carried out by losing (-OH) from one of the monomers and (H) from another monomer. The two unstable monomers join together, and the (-OH) and (H) combine forming water (H2O).

For example, A-OH + B-H → AB + HOH

Word origin: dehydrate: to lose or remove water + Latin, synthesis: composition
Compare: hydrolysis.
See also: condensation, monomer, polymer, water, chemical bond.

Dehydration is when two molecules come together to produce a water (by bonding OH and H so you have H2O.) Hydrolysis is doing that in reverse. Breaking the H2O into H and OH and therefore breaking the bond. Enzymes are made up of amino acids and are actually formed by dehydration synthesis, joining the H and OH group. Enzymes are called catalysts because they are proteins that act as catalysts. They speed up a reaction without being consumed (definition of a catalyst) and therefore are considered catalysts. An enzyme is protein catalyst. There are only a few things that effect the shape of a protein (and therefore enzyme) type of bonding (hydrogen bonding, water exculsion bonding, dispersion forces, and dipole bonding) and the conditions that the protein folds. If the protein folds in water (polar), all the OH groups are going to be facing out to bond with water and all the nonpolar side groups will face in. If say, you place the same enzyme in oil (nonpolar) you will turn your enzyme inside out, which is pretty useless and kind of bad(but rather cool if you ask me...).
Finally, enzymes work by basically just lowering the amount of energy you have to put in to make that reaction happen. In every reaction, to start it, you need some energy. You might ask, then how come reactions happen? Because sometimes all you need is the heat in the air for it to happen. Enyzmes lower this needed energy, called activation energy. They bind to the reactants (called substrates) and can stress them, or press on them to stress the bonds, bind to the reactants and line them up to make the reaction more likely to happen, or even create the right environment for the reaction to happen