Action and Specificity (Leaving Cert Biology): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
What is the active site of an enzyme?
What is the active site of an enzyme?
Region that binds substrate
What percentage of the total enzyme structure does the active site typically represent?
What percentage of the total enzyme structure does the active site typically represent?
10-20%
How does the substrate fit into the enzyme's active site?
How does the substrate fit into the enzyme's active site?
Like puzzle pieces
What happens in the induced fit model when a substrate approaches an enzyme?
What happens in the induced fit model when a substrate approaches an enzyme?
Active site changes shape slightly
What is formed when substrate and enzyme bind together?
What is formed when substrate and enzyme bind together?
Enzyme-substrate complex
What happens to the enzyme after the products are released?
What happens to the enzyme after the products are released?
Returns to original shape
How many substrate molecules can some enzymes process per second?
How many substrate molecules can some enzymes process per second?
Several thousand
What does enzyme specificity mean?
What does enzyme specificity mean?
Works with one substrate type only
Why do enzymes show specificity for only one substrate?
Why do enzymes show specificity for only one substrate?
Active site fits one substrate only
What is denaturation?
What is denaturation?
Permanent loss of enzyme function
At what temperature do enzymes begin to suffer permanent damage?
At what temperature do enzymes begin to suffer permanent damage?
Above 40°C
What are the products when catalase breaks down hydrogen peroxide?
What are the products when catalase breaks down hydrogen peroxide?
Water and oxygen