How does the amount of enzyme affect the reaction rate? As the number of enzymes increase the reaction rate ____.
goes up and down at random
remains the same
increases
decreases
What happened when the temperature was set at 75o
The reaction increased significantly due to the molecules moving faster
The reaction decreased slightly due to the enzyme moving faster
The reaction rate stopped due the active site of the enzyme being denatured (changed)
The reaction rate stopped due to the substrate dissolving at the high temperature
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When people complete seemingly routine life functions, such as eating, their bodies undergo chemical changes that are driven by enzymes. Enzymes are specialized proteins that act as catalysts for chemical reactions, getting the reactions going. Catalysts speed up chemical reactions without themselves being changed.
There are numerous enzymes within living organisms. Some of the more common ones found inside our bodies include amylase, protease, and lipase (to name a few). Each of these performs a specific function. For example, amylase helps break down the carbohydrates in the food we eat, protease breaks down proteins, and lipase breaks down fats. All enzymes are important and all work in similar ways.
How Enzymes Work
Enzymes help to speed chemical reactions by lowering activation energy, which is the energy required for a chemical reaction to occur. When enzymes are present, this energy requirement is lowered, allowing the reaction to occur more quickly. Let's have a look at an example of this:
Enzyme Function
This graphic has two lines showing the reaction rates with enzymes (in blue) and without enzymes (in red). The dotted line represents the activation energy needed for this reaction to occur. Notice how there is less required energy in the enzyme driven reaction. The enzyme allows the reaction to occur more quickly than the reaction without an enzyme. Enzymes are highly useful, however, their reaction rates can be altered by their surroundings.
There are numerous enzymes within living organisms. Some of the more common ones found inside our bodies include amylase, protease, and lipase (to name a few). Each of these performs a specific function. For example, amylase helps break down the carbohydrates in the food we eat, protease breaks down proteins, and lipase breaks down fats. All enzymes are important and all work in similar ways.
How Enzymes Work
Enzymes help to speed chemical reactions by lowering activation energy, which is the energy required for a chemical reaction to occur. When enzymes are present, this energy requirement is lowered, allowing the reaction to occur more quickly. Let's have a look at an example of this:
Enzyme Function
This graphic has two lines showing the reaction rates with enzymes (in blue) and without enzymes (in red). The dotted line represents the activation energy needed for this reaction to occur. Notice how there is less required energy in the enzyme driven reaction. The enzyme allows the reaction to occur more quickly than the reaction without an enzyme. Enzymes are highly useful, however, their reaction rates can be altered by their surroundings.
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