18 Questions
What symbol is used to represent irreversible reactions?
→
What is the meaning of 'reaction equilibrium'?
When the rate of the forward reaction equals the rate of the reverse reaction
What does a bidirectional arrow (⇌) represent in a chemical reaction?
Reversible reaction
What is the purpose of enzymes in biological systems?
Act as catalysts
What is the role of activation energy (∆G‡) in a chemical reaction?
Increases reaction rate
How can reaction rates be effectively increased?
Raising the temperature
What is a reaction intermediate?
A chemical species with a finite chemical lifetime
In an enzyme-catalyzed reaction, which complexes can be considered intermediates?
ES and EP complexes
What determines the overall rate of a reaction with several steps?
The step with the highest activation energy
What is the highest-energy point in the reaction coordinate diagram called?
Transition state
In enzyme-catalyzed reactions, what are less stable chemical intermediates called?
Unstable intermediates
What term is used for the step(s) that have similar activation energies in a reaction?
Rate-limiting step
What is the main difference between allosteric and non-allosteric enzymes?
Non-allosteric enzymes have only an active site, while allosteric enzymes have an additional regulatory site.
Which type of reaction proceeds in both directions, allowing reactants to reform the products as well?
Reversible reaction
What is the role of a catalyst in a chemical reaction?
To increase the rate of the reaction
How are irreversible reactions represented?
One-directional arrow (→)
Which type of enzyme has transient complexes involving the enzyme, substrate, and product?
Allosteric enzymes
What aspect of a chemical reaction is influenced by enzymes?
The speed at which reactants disappear
Learn about the concept of reversible and irreversible reactions in chemistry. Understand how bidirectional arrows (⇌) are used to represent reversible reactions. Explore the relationship between reaction rate and reaction equilibrium in chemical reactions.
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