Chapter 3.4 Catalysts and enzymes Flashcards
1
Q
What is the definition of a catalyst?
A
A substance that increases the rate of a chemical reaction without itself undergoing any permanent chemical change.
2
Q
What is the definition of an enzyme?
A
Enzymes are biological catalysts.
3
Q
Are enzymes proteins?
A
Enzymes are proteins. The amino acid chains are folded to form the active site, which matches the shape of a specific substrate molecule.
4
Q
What does the substrate bind to?
A
The substrate binds to the active site and the reaction is catalysed by the enzyme.
5
Q
What is the definition of metabolism?
A
Metabolism is the sum of all the reactions in a cell or the body.
