Which of the Following Is a Principle of the Fluid

question 50

Multiple Choice

Which of the following is a principle of the fluid mosaic model of cell membrane structure?

• A) Phospholipids form a bilayer that is largely impermeable to water-soluble molecules.
• B) All proteins associated with the cell membrane are contained in a fluid layer on the outside of the cell.
• C) Phospholipids consist of a polar head and a nonpolar tail made of three fatty acid chains.
• D) The lipid bilayer is a solid at body temperature, thus protecting the cell.

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Definitions:

Crepitus

A crackling or grating sound or sensation produced under the skin and joints or a crackling sensation due to the presence of air in the subcutaneous tissue.

Pulsations

Rhythmic beatings or throbs, often referring to the palpable heartbeat or arteries reflecting the cardiac cycle.

Radial Pulse

The pulse felt at the wrist on the side of the thumb, indicative of heart rate and rhythm.