Question

Protein Digestion and Absorption
HCI denatures protein here.
Mechanical digestion begins here.
Amino acids that enter the bloodstream from the small intestine travel to here.
HCl is secreted here.
Single amino acids, dipeptides, and tripeptides
are absorbed here
Mouth
Mouth
Stomach
Stomach
Small Intestine
Small intestine
Pancreas
Pancreas
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Enzymes that digest amino acid chains are produced here and
delivered via a duct to the small intestine.
Pepsin is formed from pepsinogen here.
Liver

Answer 1

Based on the information provided regarding protein digestion and absorption in the gastrointestinal system, here are the correct associations:

1. **HCl denatures protein here.**
- **Stomach**

2. **Mechanical digestion begins here.**
- **Mouth**

3. **Amino acids that enter the bloodstream from the small intestine travel to here.**
- **Liver**

4. **HCl is secreted here.**
- **Stomach**

5. **Single amino acids, dipeptides, and tripeptides are absorbed here.**
- **Small intestine**

6. **Enzymes that digest amino acid chains are produced here and delivered via a duct to the small intestine.**
- **Pancreas**

7. **Pepsin is formed from pepsinogen here.**
- **Stomach**

These connections illustrate the key processes involved in protein digestion and absorption within the human body.