Chemical Reactions & Enzymes

27 terms by Lcavallo 

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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

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