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Nat Quiz 1 - 16 May

Enzymes catalyse reactions by
Lowering activation energy of the reaction
Lowering activity energy of the reaction
Lowering physical energy of the reaction
Lowering chemical energy of the reaction
Enzymes are denatured by
High temperature
Low temperature
Very high pH
Very low pH
High substrate concentration
High enzyme concentration
Enzymes are denatured by high temperature because
Bonds that give enzymes their specific 3-D shape are broken
Bonds within the enzymes are broken
Bonds that give enzymes their unique shape are formed
There is too much activation energy
What is activation energy?
Energy needed to stop a reaction
Energy needed to continue a reaction
Energy needed to start a reaction
Energy given out by a reaction
Sucrose is digested by sucrase into glucose and fructose. Which of the following is correct?
Key = Glucose and Fructose, Lock = Sucrose
Key = Sucrose, Lock = Glucose and Fructose,
Key = Sucrase, Lock = Sucrose
Key = Sucrose, Lock = Sucrase
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