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WorksheetsRevision mini-quiz enzymes
Total questions: 10
Worksheet time: 20mins
What part of the enzyme has a unique shape and makes it specific?
substrate binding site
active sight
active region
substrate action site
active site
What model is used to explain the specificity of an enzyme to its substrate?
Padlock and key
Induced fit
Door and lock
Enzyme-substrate complex
Lock and key
What part of the graph does the enzyme effect?
A
B
C
D
What happens above 40oC?
Temporarily denatured
Enzyme death
Enzyme destruction
Permanently denatured
Permanently altered
What is c?
Enzyme-product complex
Enzyme-catalyst complex
Substrate-catalyst complex
Substrate-product complex
Enzyme-substrate complex
Where is pepsin found?
The stomach
The mouth
The Liver
The small intestines
Why are enzymes classed as catalysts?
They lower activation energy.
They speed up the reaction.
They become denatured above 40°C.
They aren't chemically changed by the reaction.
What are valid reasons why the rate of reaction is low at 10°C?
The active site is the wrong shape.
There only a few collisions.
The enzyme and substrate molecules don't have a lot of kinetic energy.
The enzyme-substrate complex is locked.
Which enzyme catalyses the reaction that produces amino acids?
Amylase
Lipase
Protease
Carbohydrase
What are the products when a lipase catalyses the breakdown of lipids?
Fatty acids and glycerol
Glucose
Fats
Amino acids
