The parietal cells of the stomach lining contain membrane “pumps” that transport hydrogen ions from the cytosol (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 °C.

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#Question id: 2294

#Unit 2. Cellular Organization

________ use such high magnification that even atoms are discernable.

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#Question id: 19700

#Unit 13. Methods in Biology

Different leads are used to record ECG of humans, these leads can be either bipolar or unipolar. Which one of the following is NOT unipolar leads?

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#Question id: 4909

#Unit 8. Inheritance Biology

A pattern of transmission where all offspring have the same phenotype as their mother is consistent with which type of non-Mendelian inheritance?

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#Question id: 12534

#Unit 10. Ecological Principles

Which of the following statements is correct about biogeochemical cycling?

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#Question id: 11456

#Unit 7. System Physiology – Animal

During an auditory transduction, ion flow varies across the ________.