Quiz 1

What are the active sites in enzymes and how do they function?

• Active sites in enzymes are random regions where substrates bind and undergo chemical reactions.

• Active sites in enzymes are inactive regions that hinder substrate binding and reaction.

• Active sites in enzymes are universal regions that work the same way for all substrates.

• Active sites in enzymes are specific regions where substrates bind and undergo chemical reactions. These sites have a unique shape that complements the shape of the substrate molecules, allowing for precise interactions. The active sites function by lowering the activation energy required for the reaction to occur, facilitating the conversion of substrates into products.

Discuss the role of cofactors in enzyme structure and function.

• Cofactors have no impact on enzyme structure and function

• Cofactors play a crucial role in enzyme structure and function by assisting in catalyzing reactions through providing chemical groups or transferring electrons.

• Cofactors are only present in a few enzymes

• Cofactors and coenzymes inhibit enzyme activity

What is enzyme denaturation and how does it impact enzyme activity?

• Enzyme denaturation is the process by which enzymes lose their structure and function due to extreme conditions such as high temperature or extreme pH levels. This impacts enzyme activity because the active site of the enzyme, where substrates bind, is altered or destroyed, leading to a loss of catalytic activity.

• Enzyme denaturation is the process of enhancing enzyme activity by exposing it to extreme conditions

• Enzyme denaturation is a protective mechanism that increases enzyme stability

• Enzyme denaturation is a reversible process that does not impact enzyme activity

How do temperature and pH affect enzyme structure?

• Temperature and pH cause enzymes to multiply rapidly

• Temperature and pH can denature enzymes by disrupting the hydrogen bonds and ionic interactions that maintain the enzyme's structure.

• Temperature and pH enhance enzyme structure by increasing stability

• Temperature and pH have no impact on enzyme structure

Explain the concept of enzyme specificity.

• Enzyme specificity is the ability of an enzyme to select a specific substrate and catalyze a specific reaction.

• Enzyme specificity is not influenced by the structure of the substrate.

• Enzyme specificity means an enzyme can only catalyze one reaction.

• Enzyme specificity is the ability of an enzyme to catalyze any reaction with any substrate.

Discuss the importance of enzyme structure in catalyzing biochemical reactions.

• Enzyme structure does not affect reaction specificity

• The importance of enzyme structure lies in its ability to provide a specific active site that binds with substrates, promoting reaction specificity and efficiency.

• Enzyme structure is only important for non-specific reactions

• Enzyme structure has no impact on biochemical reactions

High levels of acid phosphatase can be used to diagnose the following:

• Heart attack

• malaria

• kidney failure

• constipation

......are coenzymes that are loosely attached to the enzyme

Catalysts are substances that speed up the rate of a reaction and are changed in the process

• True

• False

Dehydrogenases fall under which class of enzymes?