27 terms

Chemical Reactions & Enzymes

Most enzymes are made of this macromolecule
Most enzymes are ___ or ___ structures
tertiary or quaternary
Enzymes act as a ___
A catalyst is ___
something that accelerates a reaction
Enzymes ____ specific for what they catalyze
Enzymes ____ be reused
The ending found in most enyzmes is
Enzymes work by --__
weakening the bonds which lowers activation energy
Enzymes ___ activation energy for a catalyzed reaction
A substrate is __
the substance that an enzyme acts on
The active site
a restricted region of an enzyme molecule which binds to the substrate
Induced fit
a change in the shape of an enzymes active site
___ induces an enzyme to change the shape of its active site
The effect that high temperatures have on enzymes
they denature (unfold) the enzyme
pH for most enzymes
Inorganic substances that are needed for enzymes to work properly
zinc, iron, vitamins
An enzyme inhibitor can be ___ or ___
competitive or noncompetitive
Competitive inhibitors
chemicals that resemble an enzymes normal substrate and compete with it for an active site
If a competitive inhibitor blocks the active site, the ___ can not fit
Non-competitive inhibitors
inhibitors that do not enter the active site but bind to another part of the enzyme causing the enzyme to change its shape
A chemical reaction is a
process that changes, transforms one set of chemicals into another
During chemical transformation __ and __ are conserved
mass and energy
the elements or compounds that enter into a chemical reaction
the elements or compounds that are produced by a chemical reaction
Some chemical reactions ___ energy, others ___ energy
release, absorb
chemical reactions that release energy often occur
activation energy
the energy needed to get a reaction started