Lesson 6: Enzymes at Work Flashcards
I can understand how enzymes work and explain denaturation (15 cards)
What is an enzyme?
A biological catalyst that speeds up chemical reactions in organisms.
True or False: Enzymes are consumed in the reactions they catalyze.
False
What does the term ‘denaturation’ refer to in enzymes?
The process where an enzyme loses its shape due to external factors.
True or False: After denaturation, enzymes keep working.
False
Fill in the blank: Enzymes work best at their optimal ________ and ________.
temperature; pH
What can cause the denaturation of an enzyme?
Extreme temperature and pH changes.
True or False: All enzymes have the same shape.
False
What is the role of substrates in enzyme activity?
Substrates are the molecules that enzymes use to produce products.
Fill in the blank: Enzymes are specific to their ________.
substrates
What happens to an enzyme when it is denatured?
It loses its shape and becomes inactive.
True or False: Denaturation is a reversible process.
Mostly false
Multiple Choice
Which of the following best describes enzyme catalysis?
a) Increases the temperature of the reaction to speed it up
B) Raises the activation energy so only specific molecules react
C) Lowers the activation energy of a reaction
D) Changes the overall energy released by the reaction
C) Lowers the activation energy of a reaction.
True or False: Enzymes can function in a wide range of temperatures.
False
Fill in the blank: The ________ of an enzyme is crucial for its function.
shape
What is the pH?
A scale that determines if a substance is acid or alkali.
PH: Potential of Hydrogen
