The Need for Mutual Attachments Meant Survival for Our Ancestors

question 129

Multiple Choice

The need for mutual attachments meant survival for our ancestors. This need

• A) is at the core of our existence and thus is characteristic of people everywhere.
• B) is largely a 20th century motive that is most evident in industrialized societies.
• C) is a learned motive serving our more fundamental need for self-esteem.
• D) conflicts with our more basic need to survive.

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Definitions:

Amphipathic

Refers to molecules having both hydrophobic (water-repelling) and hydrophilic (water-attracting) parts, enabling interactions with both water and lipids.

Cholesterol

A type of lipid found in the blood that is essential for building cells but can lead to heart disease if levels are too high.

Hydroxyl Group

The hydroxyl group consists of an oxygen atom bonded to a hydrogen atom (-OH), commonly found in alcohols and responsible for their polar properties.

Peripheral Proteins

Proteins that are attached to the surface of the membrane and are not embedded within the lipid bilayer, playing roles in cell signaling and structure.