When Clay Minerals in a Shale Are Subjected to Elevated

question 34

Multiple Choice

When clay minerals in a shale are subjected to elevated temperature and pressure, they may change in the solid state (that is, without melting) to form platy minerals like ___ that are at equilibrium with the new temperature/pressure conditions.

• A) feldspar
• B) amphibole
• C) mica
• D) carbonate
• E) pyroxene

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Definitions:

Passive Transport

Membrane-crossing mechanism that requires no energy input.

Facilitated Diffusion

A process of passive transport, with the aid of integral membrane proteins, allowing substances to move across cell membranes without energy expenditure.

Receptor-Mediated Endocytosis

A cellular process by which cells internalize molecules (like hormones, nutrients, and proteins) by the inward budding of plasma membrane vesicles containing proteins with receptor sites specific to the molecules being internalized.

Allosteric Regulation

The regulation of an enzyme's activity through the binding of a molecule at a site other than the enzyme's active site, causing a change in its shape.