M6: Enzymes and Enzyme Kinetics Quiz

Facilitates and accelerates chemical reactions that are necessary for various physiological processes.

• Enzymes
• Proteins

The site to which regulator binds.

• Regulatory site

• Active site

The substance that attaches to the allosteric enzyme.

• Substrate

• Regulator

Enzymes that are regulated through allosteric regulation.

• Allosteric enzymes
• Competitive enzymes

Enzymes are often referred to as:

• Biological catalysts

• Biological managers

Answer explanation

They facilitate and accelerate chemical reactions that are necessary for various physiological processes. Without enzymes, many of these reactions would occur too slowly or not at all.

Which type of proteins are highly effective biological catalysts?

• Carbohydrates
• Enzymes

Enzymes can accelerate chemical reactions in cells by approximately how much compared to uncatalyzed reactions?

• 10^3 to 10^6 times

• 10^6 to 10^20 times

Answer explanation

Enzymes are incredibly efficient at increasing the rate of chemical reactions. They can speed up reactions by a factor of between 10^6 to 10^12 times. This means that reactions that would take a very long time to occur without enzymes can happen rapidly with the help of these biological catalysts.

What is the primary composition of most enzymes?

• Lipids

• Proteins

Answer explanation

Most enzymes are proteins. Proteins are large molecules made up of chains of amino acids, and enzymes are a specific type of protein that acts as a catalyst.

Which naming convention is commonly used for enzymes that are named after the substrate they act on?

• Substrate + "ase"

• Substrate + "ose"

They are not consumed or used up in chemical reactions.

• Enzyme

• Carbohydrates