The Na+-K+ ATPase Uses the Free Energy of ATP Hydrolysis

question 21

Short Answer

The Na+-K+ ATPase uses the free energy of ATP hydrolysis in an active transport process to move Na+ and K+ across a membrane. What would the rate of nonmediated transport be given that the permeability coefficient for K+ through a human erythrocyte membrane is 2.4 × 10-10 cm/s. K+ ions must be moved from a concentration of 4 mM on the outside of the cell to 155 mM inside the cell?

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Definitions:

Stanford-Binet

The widely used American revision (by Terman at Stanford University) of Binet’s original intelligence test.

Intelligence Test Scores

Numerical outcomes derived from assessments designed to measure cognitive abilities, including reasoning, problem-solving, and understanding complex ideas.

Bell-Shaped Pattern

A distribution in statistics that describes how data points are spread across several levels with a peak in the middle; commonly referred to as a normal distribution.

Normal Curve

A bell-shaped curve that represents the distribution of many types of data where most observations cluster around the central peak and probabilities for values decrease as they move away from the center.