Podcast
Questions and Answers
Which is the best definition of activation energy?
Which is the best definition of activation energy?
- The energy required to re-form bonds in product molecules
- The energy required to bind a substrate to an active site
- The energy required to break the bonds of reactant molecules (correct)
- The energy required to end a chemical reaction
If the activation energy required for a chemical reaction were reduced, what would happen to the rate of the reaction?
If the activation energy required for a chemical reaction were reduced, what would happen to the rate of the reaction?
- The rate would remain the same.
- The rate would decrease.
- The rate would go up and down.
- The rate would increase. (correct)
Lactase and carbonic anhydrase are examples of what type of substance?
Lactase and carbonic anhydrase are examples of what type of substance?
- Product
- Reactant
- Enzyme (correct)
- Substrate
What is a substrate?
What is a substrate?
Photosynthesis is an example of?
Photosynthesis is an example of?
What is the best method for a researcher to determine if substance A affects the reaction rate of liquids X and Y?
What is the best method for a researcher to determine if substance A affects the reaction rate of liquids X and Y?
Which two substances bind using a lock-and-key mechanism?
Which two substances bind using a lock-and-key mechanism?
A substance that influences the reaction but does not participate in the reaction is a __________.
A substance that influences the reaction but does not participate in the reaction is a __________.
Which statement best describes the amount of catalyst that remains at the end of a reaction?
Which statement best describes the amount of catalyst that remains at the end of a reaction?
Which statement best describes how a catalyst can speed up a chemical reaction?
Which statement best describes how a catalyst can speed up a chemical reaction?
Study Notes
Activation Energy
- Activation energy is the energy required to break the bonds of reactant molecules in a chemical reaction.
- Lowering activation energy increases the reaction rate.
Enzymes
- Lactase and carbonic anhydrase are examples of enzymes, which are catalysts that speed up reactions.
- Enzymes bind to substrates through a lock-and-key mechanism, allowing for specific reactions to occur.
Substrates
- A substrate is a reactant that is catalyzed by an enzyme, facilitating the conversion into products during a reaction.
Photosynthesis
- Photosynthesis is categorized as an endothermic reaction, which absorbs energy rather than releasing it.
Catalyst
- A catalyst is a substance that influences a reaction's rate without being consumed in the process; it remains unchanged after the reaction.
- The amount of catalyst present at the end of a reaction is the same as at the beginning.
Experimental Methodology
- To determine if an inorganic substance (A) affects the reaction rate of colored liquids (X and Y), the time taken for the liquid to become clear should be measured with and without substance A.
- This approach identifies whether substance A acts as a catalyst.
Catalyst Mechanism
- A catalyst speeds up a chemical reaction by making lower energy pathways available, facilitating the reaction without altering the reactants or products’ concentration directly.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Description
Test your understanding of catalysts and activation energy with these flashcards designed for BAMS Cohort 6. Each card presents definitions and critical concepts related to chemical reactions and their energetic contexts. Perfect for quick reviews and enhancing your grasp of biochemistry.
