Digestion

Which enzyme is responsible for the breakdown of starch into maltose in the mouth?

• Pepsin

• Amylase

• Trypsin

• Lipase

Where does the absorption of most nutrients occur in the human digestive system?

• Stomach

• Buccal cavity

• Large intestine

• Small intestine

What is the role of bile in digestion?

• Emulsification of fats

• Breakdown of proteins

• Neutralization of stomach acid

• Absorption of water

Which part of the tooth is hardest and helps in cutting and grinding food?

• Enamel

• Dentin

• Cementum

• Pulp

Where does the digestion of carbohydrates primarily occur?

• Stomach

• Small intestine

• Large intestine

• Mouth

What substance neutralizes the acidic chyme as it enters the small intestine from the stomach?

• Bile

• Insulin

• Pancreatic juice

• Gastric juice

Which structure prevents food from entering the trachea during swallowing?

• Epiglottis

• Uvula

• Tonsils

• Diaphragm

Which substance is NOT found in pancreatic juice?

• Lipase

• Amylase

• Trypsin

• Pepsin

What is the pH range of stomach acid (gastric acid)?

• pH 2-4

• pH 4-6

• pH 1-3

• pH 5-7

What is the role of hydrochloric acid in the stomach?

• Emulsification of fats

• Breakdown of proteins

• Neutralization of stomach acid

• Create acidic medium for pepsin