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Life Sciences - BS12002 > Enzyme Kinetics > Flashcards

Flashcards in Enzyme Kinetics Deck (7)
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What is the definition of a half life?

the time taken for the concentration of a reactant to reach half of its original value.


Explain competitive inhibition.

when a molecule or an ion can fit into the active site on an enzyme but remains there unreacted


What is a cofactor?

a molecule or an ion needed for an enzymes full catalytic activity to be available.


What is the Michaelis Constant?

the concentration of a substrate that give 50% of the maximum rate.


What is induced fit?

When either the enzyme, the substrate, or both change shape when they bind.


What is a first order reaction?

the reaction rate is directly proportional to the concentration of reactants
e.g. as the concentration increases, the rate of reaction increases.


What is a zero order reaction?

the reaction rate is constant, regardless of the concentration of reactants present.