How Can Freeze-Fracture Be Used to Determine the Orientation of a Protein

question 6

Multiple Choice

How can freeze-fracture be used to determine the orientation of a protein in a membrane?

• A)Freeze-fracture allows a cell to be cleaved in between the lipid bilayer,splitting the plasma membrane into two layers.
• B)Freeze-fracture allows a cell to be cleaved in such a way as to preserve the embedded proteins.
• C)Freeze-fracture cuts the membrane in protein-sized components for viewing under an electron microscope.

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Definitions:

Confidence Interval

An estimated range of values which is likely to include an unknown population parameter, calculated from a given set of sample data.

Margin of Error

An expression of the amount of random sampling error in a survey's results, indicating a range within which the true value lies at a certain confidence level.

Probability

The extent to which an event is likely to occur, measured by the ratio of the favorable cases to the whole number of cases possible.

Confidence Interval

A range of values, derived from sample statistics, that is believed to contain the true value of an unknown population parameter with a certain degree of confidence.