Questions and Answers
How do enzymes control chemical reactions in the body?
Enzymes are biological molecules that speed up the rate of virtually all of the chemical reactions within cells.
What happens to chemical bonds during a chemical reaction?
Chemical reactions always involve changes in the chemical bonds that join atoms in compounds.
Why are enzymes important to living things?
Enzymes speed up chemical reactions that take place in cells by reducing the energy required to complete the reaction.
How do energy changes affect whether a chemical reaction will occur?
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Reactants are __________.
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Products are __________.
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A catalyst is __________.
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Activation energy is __________.
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Enzymes are __________.
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Substrates are __________.
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What is catalase?
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Study Notes
Enzymes and Chemical Reactions
- Enzymes are biological catalysts that accelerate chemical reactions in cells.
- They lower the activation energy required for reactions to occur.
Chemical Bonds in Reactions
- Chemical reactions involve breaking and forming chemical bonds between atoms in compounds.
Importance of Enzymes
- Enzymes are crucial for life as they speed up cellular reactions by decreasing energy requirements.
Energy Changes in Reactions
- Reactions that release energy tend to occur spontaneously.
- Energy-absorbing reactions require an external energy source to proceed.
Reactants and Products
- Reactants are the starting elements or compounds in a chemical reaction.
- Products are the resultant elements or compounds formed post-reaction.
Catalysts
- Catalysts are substances that enhance the speed of chemical reactions without undergoing permanent changes themselves.
Activation Energy
- Activation energy is the minimum energy needed to initiate a chemical reaction.
Enzyme Function
- Enzymes are proteins that serve as biological catalysts.
Substrates
- Substrates are the reactants that undergo a chemical change in an enzyme-catalyzed reaction.
Catalase
- Catalase is a prevalent enzyme found in nearly all living organisms.
- It facilitates the breakdown of hydrogen peroxide into water and oxygen.
- Catalase protects cells from oxidative damage caused by reactive oxygen species.
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Description
Test your knowledge on chemical reactions and the vital role of enzymes in the body with these flashcards. Each card covers fundamental concepts such as how enzymes function and the changes in chemical bonds during reactions. Perfect for students studying biology or chemistry.
