Enzyme Function and Activity Concepts

The video podcast introduces enzymes and macromolecules, focusing on their role in digestion. It explains the lock and key model of enzyme function and how enzymes interact with substrates like proteins, carbohydrates, and lipids. The video also discusses how reaction rates are affected by temperature and pH, emphasizing the importance of optimal conditions for enzyme activity.

What is the primary focus of the video podcast?

• Studying ancient civilizations

• Understanding enzymes and macromolecules

• Exploring the solar system

• Learning about plant biology

What process involves breaking down large molecules into smaller ones using enzymes?

• Photosynthesis

• Hydrolysis

• Oxidation

• Fermentation

In the lock and key model, what does the enzyme represent?

• The lock

• The key

• The door

• The handle

Which of the following is a polymer that enzymes can break down?

• Fatty acids

• Proteins

• Monosaccharides

• Amino acids

What is the monomer of proteins?

• Nucleotides

• Glycerol

• Amino acids

• Glucose

Which enzyme is responsible for breaking down lipids?

• Amylase

• Cellulase

• 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

At what pH does pepsin have optimal activity?

• Around 5

• Around 10

• Around 7

• Around 2

What effect does increasing temperature have on enzyme activity up to a certain point?

• Decreases activity

• No effect

• Stops activity

• Increases activity

What is the effect of acidic drinks on salivary amylase activity?

• Changes the substrate

• No effect

• Decreases activity

• Increases activity