In the Smectic a Liquid-Crystalline Phase, ________

question 69

Multiple Choice

In the smectic A liquid-crystalline phase, ________.

• A)the molecules are aligned along their long axes, with no ordering with respect to the ends of the molecules
• B)the molecules are arranged in sheets, with their long axes parallel and their ends aligned as well
• C)the molecules are aligned with their long axes tilted with respect to a line perpendicular to the plane in which the molecules are stacked
• D)disk-shaped molecules are aligned through a stacking of the disks in layers
• E)the molecules are oriented in a totally random fashion

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Definitions:

Fear Response

A physiological and emotional reaction triggered by perceived threats, characterized by an increase in heartbeat, sweating, and a readiness to act.

Benzodiazepines

A class of psychoactive drugs used to treat conditions such as anxiety, insomnia, and seizures, working by enhancing the effect of the GABA neurotransmitter in the brain.

Receptor Sites

Specific regions on the surface of cells or within cells that selectively bind to substances, such as neurotransmitters, hormones, or drugs, triggering a cellular response.

GABA

Gamma-Aminobutyric Acid (GABA) is a neurotransmitter in the brain that plays key roles in regulating anxiety, mood, and muscle tone.