When a Membrane Is Freeze-Fractured, the Bilayer Splits Down the Middle

question 39

Multiple Choice

When a membrane is freeze-fractured, the bilayer splits down the middle between the two layers of phospholipids. In an electron micrograph of a freeze-fractured membrane, the bumps seen on the fractured surface of the membrane are

• A) peripheral proteins.
• B) phospholipids.
• C) carbohydrates.
• D) integral proteins.
• E) cholesterol molecules.

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Definitions:

Gender Differences

Divergences in characteristics, roles, behaviors, and social expectations based on whether someone is male or female.

Sex Differences

The biological and physiological distinctions between males and females, often leading to variations in behavior and mental processes.

Sex

A biological division of males and females based on chromosomes, genitals, and secondary sexual characteristics.

Personality Research

The scientific study of how different factors contribute to individual differences in behavior and mental processes.