Tetrodotoxin Is a Toxin That Blocks the Sodium Channels from Opening

question 213

Multiple Choice

Tetrodotoxin is a toxin that blocks the sodium channels from opening. What effect would this have on the function of neurons?

• A) Neurons would depolarize more rapidly.
• B) Action potentials would lack a repolarization phase.
• C) The refractory period would be shorter than normal.
• D) The neurons would not be able to propagate action potentials.
• E) none of the above

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Definitions:

Coefficient of Determination

A statistical measure, often denoted as R^2, that represents the proportion of the variance for a dependent variable that's explained by one or more independent variables in a regression model.

Slope

The rate of change in the dependent variable for a unit change in the independent variable in a linear relationship.

Regression Line

A line of best fit through a scatterplot of data points in regression analysis, showing the relationship between the independent and dependent variables.

Positive

A term often used in statistics to denote a value or outcome that is above zero or indicates the presence of a condition or characteristic.