part of questions Name: Pre-lab Homework for BIOL 150 for TPSS Campus- Enzymes (
ID: 151207 • Letter: P
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Name: Pre-lab Homework for BIOL 150 for TPSS Campus- Enzymes (Exercise 4B) Read Exercise 4B: Enzymes in your lab manual and then complete the following questions. 1. Define enzymes? What type of macromolecule are they? 2. Why are enzymes important for catalyzing chemical reactions? 3. What is the relationship between enzyme activity and its 3D structure? What bonds are important for this 3D structure? 4. Define a substrate. Explain how the substrate and active site of the enzyme are related to each other What happens to the enzyme when it is not close to optimal conditions? What happens to the structure of the enzyme? 5. 6. Compare the shape of the enzyme when it is at the optimal temperature to when it is a high temperature. 7. Compare the shape of the enzyme when it is at the optimal phH to when it is a far from optimal pH.Explanation / Answer
1. Enzymes are biological catalysts. They decrease the activation energy and catalyze a reaction faster. They are made up of proteins.
2. They increase the speed of a reaction and thus a reaction is catalyzed at a faster rate.
3. An enzyme folds into a three-dimensional structure and creates a pocket where the substrate binds.
Hydrogen bonds, ionic bonds, and hydrophobic interactions help in the formation of 3D structure.
4. A substrate is the one which binds at the active site and is then converted to reactants. Active site and substrate have a similar structure. The substrate is specific for the active site.
5. Enzyme gets denatured if it is not at its optimal temperature.
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