What is an enzyme?
Enzymes and Biological Reactions

Flashcard
•
Biology
•
12th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
An enzyme is a biological catalyst that speeds up chemical reactions in living organisms by lowering the activation energy required for the reaction.
2.
FLASHCARD QUESTION
Front
What is the active site of an enzyme?
Back
The active site is the specific region of an enzyme where substrate molecules bind and undergo a chemical reaction.
3.
FLASHCARD QUESTION
Front
How does pH affect enzyme activity?
Back
Enzymes have optimal pH ranges in which they function best. Deviations from this range can lead to decreased activity or denaturation.
4.
FLASHCARD QUESTION
Front
What is denaturation in the context of enzymes?
Back
Denaturation is the process by which an enzyme loses its three-dimensional structure, rendering it inactive, often due to extreme pH or temperature.
5.
FLASHCARD QUESTION
Front
What role do enzymes play in biological reactions?
Back
Enzymes increase the rate of biological reactions by lowering the activation energy needed for the reaction to occur.
6.
FLASHCARD QUESTION
Front
What is a substrate?
Back
A substrate is a reactant molecule upon which an enzyme acts.
7.
FLASHCARD QUESTION
Front
What is the effect of temperature on enzyme activity?
Back
Enzyme activity typically increases with temperature up to a certain point, after which high temperatures can lead to denaturation.
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