Examlex
How are the telomeric regions on the ends of the linear eukaryotic chromosomes preserved during replication?
Active Site
A specific region of an enzyme (generally near the surface) that accepts one or more substrates and catalyzes a chemical reaction. Compare with allosteric site.
Enzyme Molecule
A biological catalyst that speeds up the rate of chemical reactions in cells without being consumed in the process.
Substrate
A substance on which an enzyme acts; a reactant in an
Energy of Activation
The minimum amount of energy required to start a chemical reaction, often lowered by the presence of a catalyst.
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