Enzymes- B Flashcards
(18 cards)
What are enzymes?
Biological catalysts that speed up chemical reactions in living organisms.
Are enzymes consumed in the reactions they catalyze?
No
Enzymes are specific to their _______. Fill in the blank
substrates
What is the active site of an enzyme?
The region where substrate molecules bind and undergo a chemical reaction.
What factors can affect enzyme activity?
Temperature, pH, Substrate concentration
What is the role of temperature in enzyme activity?
Temperature affects the rate of enzyme-catalyzed reactions, with each enzyme having an optimal temperature.
Can Enzymes work in both acidic and basic environments.
Yes
What is an enzyme inhibitor?
A substance that decreases or stops the activity of an enzyme.
The _______ model describes how enzymes and substrates fit together.
lock and key
What happens to enzymes at high temperatures?
They can denature, losing their functional shape and activity.
Which of the following is NOT a type of enzyme? A) Ligase B) Amylase C) Nucleotide D) Protease
Nucleotide
What is the term for the maximum rate of reaction in enzyme kinetics?
Vmax
Are all enzymes proteins?
No
What is the significance of enzyme concentration in a reaction?
Higher enzyme concentration typically increases the rate of reaction, assuming substrate is in excess.
Enzymes lower the _______ energy of a reaction.
activation
What is the independent variable of this required practical?
Ph of amylase’s environment
What is the dependent variable of this required practical?
Time taken to digest starch
What is the control variable of this required practical?
Type and size of tubes/beakers
