Review on Chemistry of Biomolecules

Definitions
 
Co-factor
Non-protein  chemical compound that is bound to a protein.

Con-enzyme
If the co-factor is organic,then it is co-enzyme. 

Apo Enzyme
Protein component of an enzyme to which the co-enzyme attaches to form an active enzyme.

Holo Enzyme
A complete catalytic activity of enzyme together with bound enzyme or metal ion.

Prosthetic Group
Is a kind of co-factor which is a organic molecule that is permanently attached to an enzyme.

Regulatory Enzyme (Adjustable Enzyme)
Control the rate of reaction by an enzyme by some effector (inhibitor or activator) or by alternation of some conditions such as pH.

Allosteric Enzyme
Function through reversible non-covalent binding of a regulatory metabolic at a site other than catalytic active site.

DNA Intercalation
It is an insertion by covalent linkage of  a molecule into the double-stranded Deoxyribonucleotide polymer between internal bone pairs stacked one on another perpendicular to the double helix axis.

Preservative

It is any substance that inhibiting, retarding or arresting the group of 
micro-organisms or any deterioration of food due to micro-organisms.

Exceptions for Preservatives

1. Sugar
2. Vinegar
3. Alcohol / Wine