Question

enzymes are a type of protein. they help speed up reactions in our cells. without them, the necessary chemical reactions would not occur quickly enough to maintain life. enzyme function in biology, enzymes are known as catalysts. they reduce the amount of energy needed to activate a chemical reaction. the enzyme is not consumed in the reaction, so its concentration remains constant and it can catalyze another reaction. enzymes are produced inside of cells by ribosomes. their shape determines which substances they can catalyze. these substances, called substrates, fit the shape of a particular enzyme like a lock fits a key. therefore, the enzyme - substrate model is referred to as the lock and key model. in figure 2, the enzyme amylase helps breaks down starches into sugars that our cells can use for energy. in this case, starch is the substrate. once the products are released, the enzyme is free to catalyze another reaction. many of the enzymes names end in \ase\. 1. demonstrate how two products are produced using the lock and key model. 2. identify the suffix (ending) on many catalyst names. 3. describe the purpose of an enzyme. 4. explain why a single enzyme can end up catalyzing many reactions.

Explanation:

1. In the Lock - and - Key Model, the enzyme has a specific active - site shape. The substrate fits into this active site like a key into a lock. The enzyme - substrate complex forms, and the reaction occurs, producing products which then leave the active site, allowing the enzyme to bind to another substrate molecule.
2. The suffix "ase" is commonly found on many catalyst (enzyme) names. For example, amylase is an enzyme that breaks down starch.
3. The purpose of an enzyme is to act as a biological catalyst. It speeds up the rate of chemical reactions in cells by reducing the activation energy required for the reaction to occur.
4. A single enzyme can catalyze many reactions because it is not consumed in the reaction. Once the products are formed and released from the enzyme's active site, the enzyme is free to bind to another substrate molecule and catalyze the reaction again.

Answer:

1. The enzyme has a specific active - site shape. The substrate fits into it like a key into a lock to form an enzyme - substrate complex. The reaction occurs, and products are released, freeing the enzyme for another substrate.
2. "ase"
3. To act as a biological catalyst and speed up chemical reactions in cells by reducing activation energy.
4. Because it is not consumed in the reaction and can bind to multiple substrate molecules after products are released.