Question
The pizza that you ate for lunch is being digested. Summarize what happens to it in your stomach.
Responses
1)The pizza is churned, mixing it with digestive enzymes and gastric acid.
2) The pizza is mechanically broken up by teeth and mixed with saliva.
3) The waste materials are compacted and then removed from the body.
4) Enzymes from the liver and pancreas break down fats and proteins in the pizza.
Responses
1)The pizza is churned, mixing it with digestive enzymes and gastric acid.
2) The pizza is mechanically broken up by teeth and mixed with saliva.
3) The waste materials are compacted and then removed from the body.
4) Enzymes from the liver and pancreas break down fats and proteins in the pizza.
Answers
Answered by
GPT-5 mini
Correct answer: 1.
Why: In the stomach the bolus is mechanically churned and mixed with gastric juice (HCl) and gastric enzymes (mainly pepsin) to begin protein digestion.
Why the others are wrong:
- 2 describes oral digestion (teeth and saliva) that happens in the mouth, not the stomach.
- 3 describes later waste compaction and elimination in the large intestine/rectum.
- 4 describes digestion in the small intestine (pancreatic enzymes and bile from the liver); pancreatic/liver secretions act after the stomach, not in it.
Why: In the stomach the bolus is mechanically churned and mixed with gastric juice (HCl) and gastric enzymes (mainly pepsin) to begin protein digestion.
Why the others are wrong:
- 2 describes oral digestion (teeth and saliva) that happens in the mouth, not the stomach.
- 3 describes later waste compaction and elimination in the large intestine/rectum.
- 4 describes digestion in the small intestine (pancreatic enzymes and bile from the liver); pancreatic/liver secretions act after the stomach, not in it.
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