Enzyme Function and Activity Concepts

Josh Patel presents a biology lesson on enzymes, explaining their role as catalysts in chemical reactions. Enzymes lower activation energy, speeding up reactions without being consumed. They function best under specific conditions, and disruptions can lead to denaturation. The lesson covers enzyme structure, function, and the impact of temperature changes, such as fever, on enzyme activity. The lock and key model illustrates enzyme-substrate interactions, emphasizing the specificity of enzyme action.

What is the primary role of enzymes in chemical reactions?

• To increase the activation energy

• To decrease the reaction rate

• To act as catalysts and lower activation energy

• To change the products of the reaction

How can you identify an enzyme by its name?

• It contains 'zyme' in the middle

• It starts with 'en'

• It ends with 'ase'

• It ends with 'ose'

What is the primary function of enzymes in living organisms?

• To store genetic information

• To act as structural components

• To transport molecules

• To speed up chemical reactions

What is the significance of the enzyme's structure?

• It changes with every reaction

• It has no impact on enzyme activity

• It is identical for all enzymes

• It determines the enzyme's function

What happens to enzymes when the temperature is too high?

• They become more active

• They denature and lose function

• They change the reaction products

• They increase the activation energy

What is the effect of a high fever on enzymes?

• It increases the production of enzymes

• It has no effect on enzymes

• It causes enzymes to denature

• It enhances enzyme activity

What is the result of enzyme denaturation?

• Increased enzyme activity

• Permanent loss of enzyme function

• Temporary change in enzyme shape

• Enhanced substrate binding

What is the lock and key model used to describe?

• The way enzymes are named

• The process of enzyme denaturation

• The binding of substrates to enzyme active sites

• The increase in reaction rate by enzymes

What is the role of substrates in enzyme activity?

• They inhibit enzyme function

• They bind to active sites on enzymes

• They increase the enzyme's temperature

• They change the enzyme's structure

What is the next topic after enzymes in the biology lesson?

• Cell division

• Genetic inheritance

• Cell function and cell theory

• Photosynthesis