How can we help?

You can also find more resources in our Help Center.

27 terms

Chemical Reactions & Enzymes

STUDY
PLAY
Most enzymes are made of this macromolecule
protein
Most enzymes are ___ or ___ structures
tertiary or quaternary
Enzymes act as a ___
catalyst
A catalyst is ___
something that accelerates a reaction
Enzymes ____ specific for what they catalyze
specific
Enzymes ____ be reused
can
The ending found in most enyzmes is
"ase"
Enzymes work by --__
weakening the bonds which lowers activation energy
Enzymes ___ activation energy for a catalyzed reaction
lowers
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
substrate
The effect that high temperatures have on enzymes
they denature (unfold) the enzyme
pH for most enzymes
6-8
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
substrate
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
Reactants
the elements or compounds that enter into a chemical reaction
Products
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
spontaneously
activation energy
the energy needed to get a reaction started