WorksheetsLECTURE SB025 CHAPTER 4 BIOCTALYSIS
Total questions: 10
Worksheet time: 9mins
How does a catalyst work in speeding up a reaction?
by giving them more energy
by lowering the activation energy
by making them more available
Which class of enzyme catalyses the formation of bonds between two molecules using energy derived from the breakdown of ATP?
Oxidoreductases
Hydrolases
Ligases
Transferases
Enzyme that bring oxidation and reduction reactions belong to the class (a)
The pH at which an enzyme is most efficient is called the (a) pH of an enzyme.
What are the enzymes called when they are at high temperature or extreme pH?
denatured
killed
inactive
Sketch the graph to show the effects of temperature to the rate of enzyme reaction.
Collisions are the result of _______ of the substrate and enzyme.
repulsion
attraction
movements
denaturation
After an enzyme is denatured, the substrate (a) bind to the active site.
Cofactors for enzyme are accurately described as
The protein substance
The non-protein substance
The inorganic substance
The organic substance
Hydrogen cyanide binds to the active site of an enzyme that is part of the pathway that forms ATP in cells; in this way, it prevents the enzyme’s activity. Hence, hydrogen cyanide can best be described as a
competitive inhibitor
non-competitive inhibitor
