Enzymes Flashcards
Bio molecular nature of enzymes
Protein
What is an enzyme
Biological catalyst
Protein that speed up a reaction without being used up in the reaction
Where in the cell are enzymes produced
Ribosomes
Name an enzyme used in a practical experiment and it’s substrate
Catalase (celery) Hydrogen Peroxide (H2O2)
2 factors which can be tested in the laboratory that affect the activity of an enzyme
Temperature
pH
How would you measure the rate of enzyme activity
Volume of froth
Explain the term optimum in relation to enzyme activity
The most favourable condition
What is a denatured enzyme
Has lost it’s shape and can no longer carry out it’s function
Experiment to show denaturation
?
Name the theory which explains how an enzyme attaches to a specific substrate
Induced fit model
What is an immobilised enzyme
Attached to each other or to an inert material
What can be used in the laboratory to immobilise enzymes
Sodium alginate
What chemical is used to harden the immobilised enzyme beads
Calcium chloride
2 advantages of using immobilised enzymes
May be reused
Clear product
Cheaper
More stable
