Can you place each word in the appropriate sentence?
Part A
Drag the terms on the left to the appropriate blanks on the right to complete the sentences.
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The specific location within an enzyme molecule where the substrate binds is called the Blank.target 1 ?of 9
High temperatures or changes in pH can Blank an enzyme, causing it to lose its shape and biological activity.target 2 ?of 9
Enzymes speed up chemical reactions by lowering the Blank, which allows the reaction to proceed much more quickly.target 3 ?of 9
During an enzymatic reaction, a molecule of Blank binds to the enzyme and is broken down into one or more molecules of Blank, which are released.target 4 ?of 9target 5 ?of 9
Lactose takes years to break down on its own. But if exposed to the protein lactase, the reaction proceeds very quickly, while lactase itself remains unchanged. Lactase is an example of a(n) ?Blank.target 6 ?of 9
The Blank between an active site and its substrate often strains bonds and helps the reaction proceed.target 7 ?of 9
An enzyme is considered a(n) ?Blank because it speeds up a chemical reaction without being used up.target 8 ?of 9
A(n) ?Blank is a molecule that can bind to an enzyme and prevent the enzyme from working.
The Correct Answer and Explanation is :
Here are the correct answers for Part A:
- active site
- denature
- activation energy
- substrate, product
- enzyme
- interaction
- catalyst
- inhibitor
Explanation:
- Active site: This refers to the specific location on an enzyme where a substrate molecule binds. The enzyme’s active site is designed to fit the substrate in a way that facilitates the chemical reaction. This binding is crucial for the enzyme to perform its catalytic function.
- Denature: High temperatures or changes in pH can cause the enzyme to “denature,” meaning it loses its three-dimensional structure. As a result, the enzyme cannot bind to its substrate or catalyze reactions effectively. Denaturation typically results in a loss of biological activity in enzymes.
- Activation energy: Enzymes speed up reactions by lowering the activation energy, which is the minimum amount of energy required for a reaction to occur. By reducing this barrier, enzymes make it easier for reactions to proceed, significantly increasing their rate.
- Substrate and Product: The substrate is the molecule that binds to the enzyme’s active site and undergoes a chemical transformation. After the reaction, the substrate is converted into one or more product molecules, which are then released from the enzyme.
- Enzyme: Lactase is an example of an enzyme. It speeds up the breakdown of lactose, a sugar, into its constituent parts. The enzyme itself is not consumed in the reaction and can continue to catalyze subsequent reactions.
- Interaction: The interaction between the active site and its substrate is essential for the enzyme’s function. This interaction often involves the formation of temporary bonds or strain within the substrate’s chemical structure, which helps to facilitate the reaction.
- Catalyst: Enzymes are catalysts because they accelerate chemical reactions without being consumed in the process. They lower the activation energy of reactions, enabling the reaction to proceed more quickly.
- Inhibitor: An inhibitor is a molecule that can bind to an enzyme and reduce or stop its activity. Some inhibitors block the active site, while others might alter the enzyme’s structure, preventing it from functioning properly. Inhibitors are important for regulating enzyme activity in cells.