Use This Description to Answer the Following Questions

question 69

Multiple Choice

Use this description to answer the following questions.
A major group of G protein-coupled receptors contains seven transmembrane α helices. The amino end of the protein lies at the exterior of the plasma membrane. Loops of amino acids connect the helices either at the exterior face or on the cytosol face of the membrane. The loop on the cytosol side between helices 5 and 6 is usually substantially longer than the others.
-The coupled G protein most likely interacts with this receptor

• A) at the NH₃ end.
• B) at the COO- end.
• C) along the exterior margin.
• D) along the interior margin.
• E) at the loop between H5 and H6.

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Definitions:

Df

Df, or degrees of freedom, often used in statistical analysis, is the number of independent pieces of information available to estimate another piece of information.

Mean Square

A statistical measure used primarily in the context of ANOVA, representing the average of the squares of differences from the mean, indicative of variance.

Main Effect

The direct impact of an independent variable on a dependent variable in an experimental study, ignoring the effects of other independent variables.

Factor A

In experimental design, a variable that is deliberately manipulated to observe its effect on a dependent variable, often referred to as an independent variable.