Proteins that help to speed up chemical reactions.
|Activation energy|| |
The energy needed to start a chemical reaction.
|active site|| |
The substrate (such as hydrogen peroxide from our experiment) bonds to a specific area on the enzyme molecule (catalase). This specific area is known as the _________________________.
|7||The optimum pH for most human metabolic enzyme catalyzed reactions is __________.|
|37 degrees Celsius (98.6 degrees Fahrenheit)||The optimum temperature most human metabolic enzyme catalyzed reactions is __________.|
|hydrogen peroxide||In our lab experiment with catalase and hydrogen peroxide. Which of these two substances represents the substrate?|
|catalase||In our lab experiment with catalase and hydrogen peroxide. Which of these two substances represents the enzyme?|
|H2O2-> H2O + O2||Write the chemical reaction (equation) that takes place when hydrogen peroxide comes in contact with catalase:|
| 1. Molecules move faster.|
2. The collisions between molecules become more energetic.
2. The number of collisions between molecules increases.
|How are chemical reactions affected when temperature is increased?|
| 1. The enzyme might change shape (denature) and not work as well (or at all).|
2. The active site of the enzyme may change shape and then the substrate can't bind to it.
|Increasing temperature can help speed up enzyme activity... to a point. What might happen if the enzyme gets too warm?|
|Carbon dioxide concentration|| Which of the following variables is LEAST likely to affect an enzymes' activity (an enzymes' rate of reaction)?|
3. The enzymes' concentration
4. Carbon dioxide concentration
|-ase||Most enzyme names end in:|
|Exothermic||During the catalase/enzyme lab the test tube warmed up during the reaction. What type of reaction is this?|
|3. Enzymes take place directly in the reaction and are used up.|| Which of the following statements about enzymes is NOT true:|
1. Enzymes are proteins
2. Enzymes are biological catalysts
3. Enzymes take place directly in the reaction and are used up.
4. Enzymes help speed up chemical reactions.
|Enzyme||Catalase is a specific type of:|
|Hydrogen peroxide||Catalase is an enzyme that breaks down:|
|g) all of the above|| Catalase is found in:|
f) NOVA students
g) all of the above
|oxygen||The gas that was released when hydrogen peroxide was exposed to catalase was:|