What Are Enzymes? — Definition & Overview
Read this topicExplanations 5
- How Do Enzymes Work? Enzymes are proteins that speed up chemical reactions in cells without being used up. In fancy scientific terms, they are specialized, catalytic protein mac…
By Deena Hauze, Alex Federspiel, Mario Janakis, Jonathan Heller, Gabi Slizewska, Valeri Natole
- The Perfect Fit What Is a Catalyst? Without enzyme molecules, reactants float around in a cell hoping that they will bump into each other in just the right way to cause a reacti…
By Sarah Morgan, Deena Hauze, Mario Janakis, Alex Federspiel, Valeri Natole, Gabi Slizewska
- What Are Enzymes? Enzymes are sites of catalytic activity, speeding up almost every single chemical reaction that happens in our cells. A catalyst is something that increases th…
By Sylvia Freeman, Mario Janakis, Gabi Slizewska, Valeri Natole
- How Do Enzymes Speed Up Reactions? An enzyme is an organic molecule and a type of protein. Enzymes are a type of catalyst, meaning they speed up chemical reactions without being…
By Gabi Slizewska, Deena Hauze, Mario Janakis, Caroline K, Valeri Natole
- (Video) Enzymes by Amoeba Sisters Chemical reactions abound in our bodies and enzymes help them happen. This video breaks down—pun intended—what enzymes are, what they do, and h…
By Valeri Natole, Mario Janakis
Problems 20
- Select the best explanations of the function of an enzyme.
- Enzymes are woah‾\underline{\phantom{woah}}woah.
- Which statement about enzymes is incorrect?
- Select all of the correct statements about enzymes.
- True or False\text{True or False}True or False === Which of the following statements about enzymes is false?
- Which of the choices below puts the steps listed in the blue box into the correct order?
- Which numbered portion of the image above shows the products of an enzyme-catalyzed reaction?
- Which numbered portion of the image above shows the substrate of an enzyme-catalyzed reaction?
- Which numbered portion of the image above shows the catalyst?
- 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…
- Which of the statements below is correct?
- The graphs above show the activation energy required for two chemical reactions: Reaction A and Reaction B. Using these images, determine which reaction was catalyzed by an enzyme.
- Which of the four molecules shown above could be a potential competitive inhibitor in this reaction?
- Which of the four macromolecules could enzymes be considered?
- Molecule X binds to a site on the enzyme other than the active site, which leads to a decrease in reaction rate. What would Molecule X likely be?
- Which of the following substances is most likely an enzyme?
- Carefully examine the enzyme shown above. Which of the following substrates would be able to bind to the enzyme?
- Examine the enzyme-substrate complex shown above. What will the active site look like after the substrate is turned into product?
- Examine the plot shown above. Which of the reactions most likely uses an enzyme?
- Examine the plot shown above. Which of the reactions occurs the fastest?