B3.4 Catalysts and enzymes

Question 1

What are enzymes?

Answer 1

Special biological catalyst that speed up reactions

Question 2

What is a substrate?

Answer 2

Reactant

Question 3

What is the purpose of the active site?

Answer 3

Has a unique shape so it can bind to a specific substrate molecule

Question 4

What is the lock and key theory?

Answer 4

Enzymes binds to the substrate because they are complementary (shapes)
So substrate is broken down into products
So products are released from the surface of the enzyme

Question 5

What is the metabolism?

Answer 5

The sum of all the reactions in a cell or in the body

Question 6

What are some types of metabolic reactions?

Answer 6

Building large molecules such as glycogen from smaller ones

Changing one molecule into another such as glucose into fractose