Biology: Enzymes
substrate molecule
-the substance on which the enzyme acts--is usually much smaller than the enzyme
substrate
A compound which is involved in a chemical reaction and is chemically changed by the reaction.
amino acids
A giant enzyme molecule is composed of
organism
An ? cannot live without enzymes
simultaneously.
An enzyme may react with several substrate chemicals
cofactor
An inorganic metal or small organic molecule which attaches to the protein portion of the enzyme and plays an important role in activating that enzyme.
optimal
Conditions in which enzymes are most active
enzyme-substrate complex
Enzymes temporarily unite with one or more substrate molecules to form an
they may not be able to react
If the reactants found in a cell are removed from the cell how will they behave chemically?
active site
The region on the surface of an enzyme molecule where the substrate molecule binds and reacts with the enzyme.
to act as a catalyst in chemical reactions.
Why are enzymes necessary
Enzymes
are produced at the direction and translation of DNA and RNA respectively
Enzyme
large protein
Enzymes are sensitive to
pH and temperature of their environment
enzymes
proteins that were found to be accelerating chemical processes in the cell (specialized form of catalyst)
Catalysts
substances that speed up chemical reactions, but remain chemically unaltered at the end of the reaction
enzymes are
vital to lowering the required activation energy for reactions in living organisms.
enzyme cofactors mentioned in the lesson
vitamins iron copper cobalt zinc calcium