Question

question 8
1 pts
because fats are insoluble in water, they must be

catalyzed.

emulsified.

absorbed in the stomach.

secreted before they enter the small intestine.

question 9
1 pts
the process of deglutition includes all of the following except the ______ stage.

oral

pharyngeal

esophageal

laryngeal

question 10
1 pts
pepsinogen is converted to pepsin by hydrochloric acid, which is produced by the ______ of the gastric glands.

parietal cells

chief cells

tuft cells

rugae

Explanation:

Question 8

Fats are lipids and insoluble in water. Emulsification is the process of breaking down fat into smaller droplets to mix with water - based digestive juices, which is necessary for fat digestion. Catalysis is about speeding up reactions, fat isn't absorbed in the stomach (mostly in small intestine), and secretion before small intestine isn't related to fat - water insolubility. So the correct option is emulsified.

Deglutition (swallowing) has three stages: oral (voluntary, in mouth), pharyngeal (involuntary, in pharynx), and esophageal (involuntary, in esophagus). Laryngeal is not a stage of deglutition.

Parietal cells of gastric glands secrete hydrochloric acid (HCl). HCl converts pepsinogen to pepsin. Chief cells secrete pepsinogen, tuft cells have other functions, and rugae are folds in the stomach lining, not related to HCl production.

Answer:

B. emulsified (assuming the options are labeled as A: catalyzed, B: emulsified, C: absorbed in the stomach, D: secreted before they enter the small intestine)

Question 9