the parietal cells of the stomach lining contain membrane pumps that transport hydrogen ions from the side is all ph7into the stomach contributing to the acidity of gastric juice pH 1 calculate the free energy required to transfer one mole of hydrogen ions through these pumps assume the temperature is 37\deg C
Added by Rocio S.
Step 1
The Nernst equation relates the change in free energy (ĪG) to the concentration difference of ions across a membrane. Show moreā¦
Show all steps
Your feedback will help us improve your experience
Ronald Prasad and 57 other Biology educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
The parietal cells of the stomach lining contain membrane "pumps" that transport hydrogen ions from the cytosol $(\mathrm{pH} 7.0)$ into the stomach, contributing to the acidity of gastric juice (pH 1.0 ). Calculate the free energy required to transport 1 mol of hydrogen ions through these pumps. (Hint: See Chapter 11 .) Assume a temperature of $37^{\circ} \mathrm{C}$
Kaden B.
Gastric juice (pH 1.5) is produced by pumping HCl from blood plasma (pH 7.4 ) into the stomach. Calculate the amount of free energy required to concentrate the $\mathrm{H}^{+}$ in 1 L of gastric juice at $37^{\circ} \mathrm{C}$. Under cellular conditions, how many moles of ATP must be hydrolyzed to provide this amount of free energy? The free-energy change for ATP hydrolysis under cellular conditions is about $-58 \mathrm{kJ} / \mathrm{mol}$ (as explained in Chapter 13 ). Ignore the effects of the transmembrane electrical potential.
Recommended Textbooks
Biology for AP Courses
Objective Biology for NEET
Introduction to General, Organic and Biochemistry
Transcript
Watch the video solution with this free unlock.
EMAIL
PASSWORD