WEEK 7 BIOC0001 EXAM QUESTIONS AND ANSWERS WITH
COMPLETE SOLUTIONS VERIFIED LATEST UPDATE
Enzymes
substances which catalyses chemical reactions in living organisms
How enzymes stabilise transition state
Interactions with functional groups and substrates to generate an alternative low energy
reaction pathway
Coenzymes
protein which enzyme needs to function
Cofactor
substance which enzyme needs to function; Can be organic or metal ion
co-substrates
Coenzyme which is transiently bound
prosthetic group
Coenzyme which is persistently bound
Apoenzyme
protein portion of an enzyme
Holoenzyme
apoenzyme + cofactor
Oxidoreductase
Enzyme which catalyses oxidation or reduction reactions
, transferases
Enzymes responsible for transferring a functional group
Hydrolases
Enzymes responsible for hydrolytic cleavage of a bond using water
Lyases
addition of groups to double bonds, or formation of double bonds by removal of groups
Isomerases
rearrangement of the structure of molecules
Ligases
bond formation coupled with ATP hydrolysis
Translocases
Transports a group over cell membrane
Transition state
a high-energy intermediate state of the reactants during a chemical reaction that must
be achieved for the reaction to proceed
Exergonic
releases energy
Endergonic
absorbs energy
Rate determining step
Step with largest deltaG
covalent catalysis
COMPLETE SOLUTIONS VERIFIED LATEST UPDATE
Enzymes
substances which catalyses chemical reactions in living organisms
How enzymes stabilise transition state
Interactions with functional groups and substrates to generate an alternative low energy
reaction pathway
Coenzymes
protein which enzyme needs to function
Cofactor
substance which enzyme needs to function; Can be organic or metal ion
co-substrates
Coenzyme which is transiently bound
prosthetic group
Coenzyme which is persistently bound
Apoenzyme
protein portion of an enzyme
Holoenzyme
apoenzyme + cofactor
Oxidoreductase
Enzyme which catalyses oxidation or reduction reactions
, transferases
Enzymes responsible for transferring a functional group
Hydrolases
Enzymes responsible for hydrolytic cleavage of a bond using water
Lyases
addition of groups to double bonds, or formation of double bonds by removal of groups
Isomerases
rearrangement of the structure of molecules
Ligases
bond formation coupled with ATP hydrolysis
Translocases
Transports a group over cell membrane
Transition state
a high-energy intermediate state of the reactants during a chemical reaction that must
be achieved for the reaction to proceed
Exergonic
releases energy
Endergonic
absorbs energy
Rate determining step
Step with largest deltaG
covalent catalysis
