Exploring Enzyme Function and Factors Affecting Activity

The video explains the role of enzymes as biological catalysts that speed up chemical reactions without being consumed. It covers the structure and function of enzymes, emphasizing the lock-and-key model for enzyme-substrate interaction. The video also discusses how temperature and pH affect enzyme activity, using amylase and catalase as examples. Experiments are described to demonstrate these effects, highlighting the importance of maintaining optimal conditions for enzyme function.

What are enzymes primarily made of?

• Carbohydrates

• Lipids

• Proteins

• Nucleic acids

What is the role of enzymes in the body?

• They transport oxygen

• They provide structural support

• They speed up chemical reactions

• They store energy

What is the term used to describe the specific area of an enzyme where the substrate binds?

• Catalytic site

• Reaction site

• Active site

• Binding site

How do enzymes and substrates interact according to the lock-and-key model?

• They change shape to fit

• They bind randomly

• They fit together perfectly

• They repel each other

Which enzyme is used to break down starch into glucose?

• Catalase

• Amylase

• Protease

• Lipase

What happens to an enzyme when it is denatured?

• It becomes a substrate

• It multiplies

• It changes shape and loses function

• It becomes more active

What is the optimum temperature for most human enzymes?

• 60°C

• 25°C

• 37°C

• 50°C

What is the purpose of using buffer solutions in enzyme experiments?

• To increase enzyme concentration

• To maintain a specific pH

• To provide nutrients

• To maintain a constant temperature

Which enzyme breaks down hydrogen peroxide into water and oxygen?

• Amylase

• Lipase

• Catalase

• Protease

Why is it important to repeat experiments multiple times?

• To increase the number of variables

• To change the hypothesis

• To ensure reliability

• To use more chemicals