Factors Affecting the Rate of Enzyme Activity (Leaving Cert Biology): Quizzes
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Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
What is the optimum temperature of an enzyme?
What is the optimum temperature of an enzyme?
The temperature at which the enzyme works best
What happens to enzyme activity at 0°C?
What happens to enzyme activity at 0°C?
The rate is zero; molecules cannot move
What happens as temperature increases from low to moderate levels?
What happens as temperature increases from low to moderate levels?
The rate of enzyme action increases
Above what temperature do human enzymes begin to change shape?
Above what temperature do human enzymes begin to change shape?
37°C
What is the optimum temperature range for plant enzymes?
What is the optimum temperature range for plant enzymes?
25-35°C
When do enzymes become denatured by temperature?
When do enzymes become denatured by temperature?
At high temperatures only
What is the optimum pH of an enzyme?
What is the optimum pH of an enzyme?
The pH at which the enzyme works best
What is the range of the pH scale?
What is the range of the pH scale?
0 to 14
Between what pH do many enzymes work best?
Between what pH do many enzymes work best?
pH 6 and 8
What is the purpose of a buffer solution in enzyme experiments?
What is the purpose of a buffer solution in enzyme experiments?
To keep the pH constant
What are enzyme inhibitors?
What are enzyme inhibitors?
Chemicals that attach to enzymes and destroy their shape
Which substance blocks enzymes involved in respiration?
Which substance blocks enzymes involved in respiration?
Cyanide