The Concentration Gradient for Na⁺

question 58

Multiple Choice

The concentration gradient for Na⁺

• A) favors its movement into the cell at resting potential.
• B) favors its movement out of the cell at resting potential.
• C) is maintained by the Na⁺-K⁺ pump.
• D) both (a) and (c) above.
• E) both (b) and (c) above.

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Definitions:

Longitudinal Design

A research method in which data is gathered for the same subjects repeatedly over a period of time to observe changes and development.

Inexpensive

Not costing a lot of money; affordable.

Cross-Sectional Design

A research method in which data is collected from a population, or a representative subset, at one specific point in time.

Longitudinal Study

A research design that involves repeated observations of the same variables (such as people) over short or long periods of time.