Deactivation of Enzymes — Overview & Examples
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- When Does a Protein Become Denatured? Enzymes are biological catalysts. So, like most catalysts, they work best under certain conditions. If you think of making a soup, it won't…
By Deena Hauze, Alex Federspiel, Mario Janakis
- How Are Enzymes Deactivated? There are a few ways to damage or destroy an enzyme. As we've hinted at, the shape of an enzyme is fundamental to its ability to work. So, damaged e…
By Hannah Bonville, Mario Janakis, Alex Federspiel
- What Causes Enzymes to Deactivate? Enzymes can be deactivated by a range of factors. Often, this happens because of changes in temperature or pH. Enzymes are picky. Each enzyme …
By Gabi Slizewska, Mario Janakis
- (Video) Enzymes, Feedback Inhibition, and Allosteric Regulation by JKM12988 You probably know about what enzymes do when they're active. But are they ever not active, you ask? Y…
By Valeri Natole, Mario Janakis, Gabi Slizewska
Problems 20
- Which of the following can cause an enzyme to deactivate?
- Which of these graphs represents how temperature impacts an enzyme? Image Sources: A: By Thomas Shafee (Own work) CC BY 4.0, via Wikimedia Commons B: By domdomegg (Own work) CC …
- Which of these lines most likely represents the activity of an enzyme located in the stomach?
- How do high temperatures cause the deactivation of enzymes?
- When enzymes are exposed to extreme temperatures or pH, they denature and lose their shape. Specifically, their active sites become deformed, preventing binding to substrates. W…
- An enzyme can lose its shape and its ability to function in the presence of heat, pH, or even extreme pressure. This process is called:
- What caused the denaturation of the egg's albumins?
- Which of the graphs above correctly shows the relationship between increasing temperature and denaturation of enzymes?
- At which of the these temperatures is the rate of reaction likely the greatest?
- What does denature mean when talking about enzymes?
- How does heating an enzyme change its effectiveness in a chemical reaction?
- Which of the following poses the least threat of denaturing an enzyme?
- If the enzyme represented by the orange graph was placed in an environment with a pH of 12, how would the enzyme likely function?
- If the enzyme represented by the blue graph was placed in an environment with a pH of 2, how would the enzyme likely function?
- Molecule Z binds to an enzyme in the active site, which leads to a decrease in reaction rate. What would Molecule Z likely be?
- Which of these statements is true?
- What does it mean for an enzyme to be deactivated?
- Examine the infographic above. Which of the statements below best describes how the pasteurization process is related to enzymes?
- Use the picture above to answer the following question. Which of the options below correctly identifies the numbered objects?
- Notice how the substrate no longer fits in the active site. Which of the images below shows what the enzyme most likely looked like before it was denatured?