Enzyme Function and Activity Concepts

The video tutorial provides a comprehensive review of enzymes, explaining their role as organic catalysts made of proteins. It covers enzyme structure, including active sites and substrate interaction, and discusses factors affecting enzyme activity such as pH, temperature, and substrate concentration. The tutorial concludes with an explanation of enzyme saturation and emphasizes the reusability of enzymes in reactions.

What elements are found in all proteins, including enzymes?

• Carbon, Hydrogen, Oxygen, Phosphorus

• Carbon, Hydrogen, Sulfur, Nitrogen

• Carbon, Oxygen, Phosphorus, Nitrogen

• Carbon, Hydrogen, Oxygen, Nitrogen

What is the role of enzymes in chemical reactions?

• They act as organic catalysts

• They prevent reactions from occurring

• They slow down reactions

• They are consumed in reactions

What is the specific region of an enzyme where substrates bind called?

• Reaction site

• Binding site

• Catalytic site

• Active site

What happens to an enzyme after it catalyzes a reaction?

• It is used up

• It can be reused

• It is destroyed

• It changes shape permanently

How does pH affect enzyme activity?

• Enzymes are not affected by pH

• Enzymes work best in acidic conditions

• Enzymes work best at a neutral pH

• Each enzyme has an optimum pH

Where in the body would you find an enzyme with an optimum pH of 3?

• In the intestines

• In the pancreas

• In the stomach

• In the liver

What effect does high temperature have on enzymes?

• It makes enzymes more effective

• It has no effect

• It denatures enzymes

• It increases enzyme activity

What happens to enzyme activity at low temperatures?

• It remains constant

• It increases

• It slows down

• It denatures the enzyme

What is the point called when all enzymes are bound to substrates?

• Activation

• Denaturation

• Saturation

• Equilibrium

What must happen for more substrate to bind to enzymes at saturation?

• Add more enzymes

• Release of products

• Decrease pH

• Increase temperature