Introduction to Enzymology
What is dogma in enzymology? - correct answer-One reaction only has one enzyme to
catalyse it
What happens during a chemical reaction? - correct answer-Activation energy provides
enough energy for the process to happen where the reactants break or form bonds and
create a new product
What is transition state? - correct answer-A less stable state that the products have to go
through to get to the final product
What is activation energy? - correct answer-Energy needed to reach transition state and the
rate of the reaction depends on how many reaction molecules acquire enough activation
energy to reach and pass through the transition state
What are catalysts? - correct answer-Substance that causes or accelerates a chemical
reaction without itself being affected
What do enzymes do? - correct answer-Enzymes act as catalysts by lowering the activation
energy barrier (lowering transition state energy level)
Definition of an enzyme - correct answer-Substance produced by a living organism which
acts as a catalyst to bring about specific biochemical reactions (its form may alter during the
reaction so not identical to a catalyst)
What form do enzymes take? - correct answer-Most enzymes are proteins but may also
include RNA and sometimes require other chemical groups to be able to function
How are enzymes named? - correct answer-Often end in suffix ase
What are oxidoreductases - correct answer-transfer of hydrogen atoms or electrons from
one molecule to another
Transferases - correct answer-moves a chemical group from one molecule to another
Hydrolases - correct answer-break down using water
Lysases - correct answer-splitting a chemical without water
Isomerases - correct answer-re-arranging groups within the substrate molecule
Ligases - correct answer-join two molecules together
Example of enzymes - correct answer-Catalase breaks down toxic peroxided into water and
oxygen
What is dogma in enzymology? - correct answer-One reaction only has one enzyme to
catalyse it
What happens during a chemical reaction? - correct answer-Activation energy provides
enough energy for the process to happen where the reactants break or form bonds and
create a new product
What is transition state? - correct answer-A less stable state that the products have to go
through to get to the final product
What is activation energy? - correct answer-Energy needed to reach transition state and the
rate of the reaction depends on how many reaction molecules acquire enough activation
energy to reach and pass through the transition state
What are catalysts? - correct answer-Substance that causes or accelerates a chemical
reaction without itself being affected
What do enzymes do? - correct answer-Enzymes act as catalysts by lowering the activation
energy barrier (lowering transition state energy level)
Definition of an enzyme - correct answer-Substance produced by a living organism which
acts as a catalyst to bring about specific biochemical reactions (its form may alter during the
reaction so not identical to a catalyst)
What form do enzymes take? - correct answer-Most enzymes are proteins but may also
include RNA and sometimes require other chemical groups to be able to function
How are enzymes named? - correct answer-Often end in suffix ase
What are oxidoreductases - correct answer-transfer of hydrogen atoms or electrons from
one molecule to another
Transferases - correct answer-moves a chemical group from one molecule to another
Hydrolases - correct answer-break down using water
Lysases - correct answer-splitting a chemical without water
Isomerases - correct answer-re-arranging groups within the substrate molecule
Ligases - correct answer-join two molecules together
Example of enzymes - correct answer-Catalase breaks down toxic peroxided into water and
oxygen
