Voltage-Gated Ion Channels Underlie the Function of Electrically Excitable Cells

question 46

Multiple Choice

Voltage-gated ion channels underlie the function of electrically excitable cells, such as nerve and muscle cells. Which of the following statements is TRUE about voltage-gated ion channels?

• A)Voltage-gated ion channels open and close in response to changes in membrane potential.
• B)Voltage-gated ion channels vary in terms of how rapidly they respond to changes in membrane potential.
• C)Voltage-gated ion channels involve a conformational change of the transmembrane protein in response to membrane voltage that changes the channel's permeability to ion flow through the channel.
• D)All of these choices are correct.

Recognize the importance of environmental factors and community infrastructure in disease prevention.

Understand the historical development of public health initiatives and their impact on community health.

Analyze the role of government and non-governmental organizations in the advancement of public health.

Identify key figures and their contributions to public health and nursing.

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Definitions:

Correlation

An indicator that measures the degree to which multiple variables vary in unison.

Denseness

A measure of the compactness or crowding of objects within a given area or volume.

Slope

The measure of the steepness or inclination of a line, often describing the rate of change between two variables.

Simple Linear Regression

A statistical method that allows us to summarize and study relationships between two continuous (quantitative) variables.