10 Questions
What is the role of enzymes in biochemical reactions?
To increase the rate of reactions
How does the absence of a catalyst affect biochemical reactions?
It significantly prolongs the time required for reactions
What conditions can influence the rate of a chemical reaction?
Temperature, pressure, and pH
How does increased temperature affect the rate of chemical reactions?
It increases the rate of reactions
What is the role of reactant concentration in influencing the rate of a reaction?
It increases the rate of reactions
What is the main function of enzymes?
Catalyze chemical reactions by lowering the activation energy
What is the role of cofactors in relation to enzymes?
Maintain the shape of the enzyme and help bind with substrates
How is the enzyme-substrate complex formed?
When sufficient amounts of enzyme and substrate collide and bind at the active site of the enzyme
What are active sites on enzymes primarily responsible for?
Binding substrates and catalyzing reactions
Which model describes the active site of enzymes where substrates bind?
Lock and key model
Study Notes
- Enzymes are essential for increasing the speed of reactions in living organisms, allowing for the production of necessary biological molecules.
- Enzymes lower the activation energy of reactions, enabling them to occur more efficiently.
- Enzymes do not add to or change the overall energy of a reaction, only affecting the activation energy.
- The main function of enzymes is to catalyze chemical reactions by lowering the activation energy.
- Enzymes require cofactors to help maintain their shape and effectively bind with substrates.
- The enzyme-substrate complex forms when sufficient amounts of enzyme and substrate collide and bind at the active site of the enzyme.
- The enzyme undergoes a conformational change when the substrate binds to its active site, catalyzing the reaction.
- Enzymes are protein structures with a specific three-dimensional shape, possessing an active site for binding substrates.
- Active sites are the open spaces on enzymes where substrates bind, facilitating the conversion of the substrate into the intended product.
- The active site can be described using the induced fit or lock and key model.
- Enzymes, such as lactase, play important roles in the breakdown of various substances in the human body.
- Lactase converts the sugar lactose into glucose and galactose by forming an enzyme-substrate complex and undergoing a conformational change.
Explore the significance of enzymes as catalysts in biochemical reactions and how they enable living organisms to sustain their major biological functions. Learn about the role of catalysts in increasing the rate of reactions and the impact of their absence on the time required for biochemical processes.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
