Enzymes

What do enzymes in the digestive system do?

• They absorb nutrients directly into the bloodstream.

• They catalyze chemical reactions, speeding them up.

• They produce new enzymes.

• They slow down chemical reactions.

What is the role of the active site on an enzyme?

• It breaks down the enzyme after its use.

• It stores the enzyme until it's needed.

• It attaches the enzyme to the cell membrane.

• It is where the substrate molecule attaches.

Which theory explains how enzymes work?

• Evolution theory

• Cell theory

• Lock and key theory

• Gene theory

What type of enzymes break down proteins?

• Proteases

• Carbohydrases

• Lipases

• Amylases

Where are protease enzymes found?

• In the saliva

• In the stomach, pancreatic fluid, and small intestine

• In the liver and gallbladder

• Only in the small intestine

What are proteins broken down into?

• Glucose molecules

• Fatty acids

• Glycerol

• Amino acids

Which enzyme is responsible for breaking down carbohydrates like starch?

• Amylase

• Carbohydrase

• Protease

• Lipase

What does bile do in the digestion of lipids?

• It breaks down lipid molecules into amino acids.

• It emulsifies lipids, increasing their surface area.

• It absorbs lipids directly into the bloodstream.

• It acts as an enzyme to digest lipids.

Where is bile made?

• In the liver

• In the small intestine

• In the pancreas

• In the stomach