Gastric juice is made up of substances secreted from parietal cells, chief cells

Question

Gastric juice is made up of substances secreted from parietal cells, chief cells, and mucous -secreting cells. The cells secrete HCI, proteolytic enzyme zymogens, mucking, and intrinsic factor. The pH of gastric juice is acidic, between 1-3. If the pH of gastric juice is 1.3, what is the amount of energy (AG) required for the transport of hydrogen ions from a cell (internal pH of 7.4) into the stomach lumen? Assume that the potential difference across the membrane separating the cell and the interior of the stomach is -70.0 mV (inside of cells negative relative to the lumen of the stomach). Assume that the temperature is 37 degreeC. The Faraday constant is 96.5 kj- V"1- mol-1 and the gas constant is 8.314times 10-3 kJ- mol^-1- K^-1.

Explanation / Answer

Go= RTlnKeq = nFEocell

Go= nFEocell

Go= 1(96.5)(-70x10-3)

Go= 6.755 kJ/mol

Related Questions

Navigate

• Browse (All)
• Browse G
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.