Motor Proteins Require Energy in the Form of ATP

question 28

Multiple Choice

Motor proteins require energy in the form of ATP. ATP hydrolysis results in a conformational change that allows the protein to move along microtubular tracks (pathways) . What structural component of the motor protein contains the ATP binding site and, therefore, changes shape to enable movement?

• A) the portion of the molecule that binds to the vesicle being transported
• B) the stalk
• C) the portion of the molecule that binds to the microtubular track along which the vesicle is being transported
• D) a location midway between the vesicle binding site and the portion of the molecule that binds to microtubular tracks

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Definitions:

Dependent Variable

A variable in an experiment or model that is expected to change in response to changes in independent variables.

Perfect Correlation

Perfect correlation occurs when two variables move in unison, either directly (perfect positive correlation) or inversely (perfect negative correlation), with a correlation coefficient of +1 or -1, respectively.

Perfect Prediction

A situation where a model or analysis predicts the outcome with 100% accuracy, with no errors.

Regression Equation

An equation that describes the line of best fit through a dataset, used to predict the outcome variable.