Biology Digestion Quiz

What is the ultimate goal of digestion?

• To increase the surface area of food particles

• To decrease the size of food particles

• To increase the size of food particles

• To decrease the surface area of food particles

Which part of the body is responsible for mechanical digestion in the digestive system?

• Esophagus

• Mouth

• Small intestine

• Stomach

What is the function of the esophagus in mechanical digestion?

• Mixing food with saliva

• Absorbing nutrients from food

• Squeezing food down to the stomach

• Breaking down food into smaller particles

What is the role of the stomach in mechanical digestion?

• Absorbing nutrients from food

• Mixing food with enzymes

• Storing food for later digestion

• Breaking down food into smaller particles

Where does chemical digestion of starch begin?

• Stomach

• Esophagus

• Mouth

• Small intestine

At what pH does amylase, the enzyme for starch digestion, work best?

• pH 2

• pH 7

• pH 8

• pH 10

Which enzyme is responsible for digesting proteins in the stomach?

• Trypsin

• Pepsin

• Lipase

• Amylase

Where does the digestion of lipids or fats take place in the digestive system?

• Mouth

• Stomach

• Small intestine

• Esophagus

What is the main reason for using enzymes in the digestive system?

• To decrease the surface area of food particles

• To store nutrients for later use

• To increase the size of food particles

• To speed up metabolic rate

Why are enzymes considered substrate specific?

• They can digest all types of nutrients

• They are only needed in small amounts

• They require specific pH and temperature to work

• They are only found in specific body parts