WorksheetsIGCSE Topic 3 - Enzymes Intro
Total questions: 14
Worksheet time: 7mins
What are enzymes?
Biological catalysts
Chemical catalysts
Physical catalysts
Psychological catalysts
What type of biological molecule are enzymes?
Carbohydrate
Lipid
Protein
DNA
Every enzyme catalyses a SINGLE reaction because they are ...
Reusable
Specific
Proteins
Special
Which model explains how enzymes work?
Lock & key
Lock & load
Lock & chain
Lock & pop
Which term is given to the molecule that binds to an enzyme?
Substance
Product
Substrate
Stratum
Where on the enzyme does the substrate bind?
Active Area
Binding Site
Binding Area
Active Site
An enzyme and its substrate bind together because they have ...
the same shape
complementary shapes
opposite shapes
different shapes
Which enzyme breaks down protein?
Amylase
Catalase
Lipase
Protease
Which enzyme breaks down starch?
Amylase
Catalase
Lipase
Protease
Which reaction is catalysed by lipase?
Lipids => Glycerol
Lipids => Amino Acids & Glycerol
Lipids => Fatty Acids
Lipids => Fatty Acids & Glycerol
The diagram shows an experiment. What is in the water after 15 minutes?
Amino Acids
Fatty Acids
Glucose
Glycerol
Which of these are digested by protease?
A
B
C
D
Which statement is correct?
Enzymes only breakdown large molecules into smaller molecules.
Enzymes increase the number of collisions between molecules.
Enzymes lower the activation energy needed to start a reaction.
Enzymes provide the activation energy needed to start a reaction.
Which type of enzyme would be able to break down another enzyme?
Amylase
Catalase
Lipase
Protease
