Enzymes (VCE SSCE Chemistry): Flashcards
📚Flashcards
Practise the cards
10 cards from this deck
ShowHide
Practise the cards
10 cards from this deck
Enzymes definition
Enzymes definition
Biological catalysts speeding up reactions in living cells
Enzyme specificity
Enzyme specificity
Each enzyme catalyses only one particular reaction type
Active site
Active site
Enzyme region where reactions occur; fits substrate shape
Substrate
Substrate
Reactant molecule binding to enzyme's active site
Lock-and-key model
Lock-and-key model
Substrate fits enzyme's active site like key in lock
Optimum temp for human enzymes
Optimum temp for human enzymes
37°C (normal body temperature)
High temp effect on enzymes
High temp effect on enzymes
Denaturation - irreversible loss of activity
Low temp effect on enzymes
Low temp effect on enzymes
Deactivation - reversible, fewer molecular collisions
Optimum pH
Optimum pH
pH where enzyme activity is greatest
Enzyme use in reactions
Enzyme use in reactions
Not used up or changed at end of reaction