Sodium Ions Are Single Atoms

question 21

Multiple Choice

Sodium ions are single atoms.Why can't they simply diffuse through the cell membrane's lipid bilayer?

• A)Since they are charged,ions can't cross the hydrophobic center of the membrane without a channel or pump.
• B)Sodium ions are covalently attached in groups of three,which are too large to diffuse easily.
• C)Ions do traverse the membrane easily,but the sodium-potassium pump moves them back across.
• D)Chelator proteins capture any ions that start to cross the bilayer.

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Definitions:

Nonpharmacologic Strategies

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The process by which an individual interprets and becomes aware of pain signals being transmitted in the body.

Reduce Pain

Strategies or treatments aimed at alleviating discomfort or pain, which may involve medication, physical therapy, or alternative therapies.

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A medical procedure whereby a needle is inserted into the lumbar region of the spine to collect cerebrospinal fluid for testing.