4a, 4b, 4c, 4d & 4e – To Investigate Factors that Affect the Rate of an Enzyme-Catalysed Reaction (LC 2027) (Leaving Cert Biology): Quizzes
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Practise the questions
13 questions from this quiz
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Practise the questions
13 questions from this quiz
What are the products when catalase breaks down hydrogen peroxide?
What are the products when catalase breaks down hydrogen peroxide?
Water and oxygen
Why is foam production used to measure enzyme activity in catalase investigations?
Why is foam production used to measure enzyme activity in catalase investigations?
More foam indicates faster enzyme activity
What is the role of washing-up liquid in the catalase investigation?
What is the role of washing-up liquid in the catalase investigation?
Traps oxygen bubbles to create foam
What is the purpose of using pH buffers in Investigation 4a?
What is the purpose of using pH buffers in Investigation 4a?
To maintain constant pH levels
What happens to enzyme reaction rate at low temperatures (0-10°C)?
What happens to enzyme reaction rate at low temperatures (0-10°C)?
Slow reaction rate occurs
What is the optimal temperature for maximum catalase enzyme activity?
What is the optimal temperature for maximum catalase enzyme activity?
Around 37°C
What happens to enzyme activity at temperatures of 50°C and above?
What happens to enzyme activity at temperatures of 50°C and above?
Reduced activity due to denaturation
What effect does increasing substrate concentration have on enzyme reaction rate?
What effect does increasing substrate concentration have on enzyme reaction rate?
Increases rate until saturation
What effect does increasing enzyme concentration have on reaction rate?
What effect does increasing enzyme concentration have on reaction rate?
Faster reaction rates occur
What happens when boiled enzyme is tested in Investigation 4e?
What happens when boiled enzyme is tested in Investigation 4e?
Little or no foam production occurs
How should temperature be kept constant when testing other factors?
How should temperature be kept constant when testing other factors?
Use water baths at same temperature
What does enzyme specificity mean?
What does enzyme specificity mean?
Each enzyme reacts with one substrate
What type of hazard is hydrogen peroxide?
What type of hazard is hydrogen peroxide?
Irritant and corrosive