Suppose There Is a Small Patch of Membrane from a Mammalian

question 45

Multiple Choice

Suppose there is a small patch of membrane from a mammalian muscle fiber, with a small volume of adjacent cytoplasm and extracellular fluid. Assume that the membrane is most permeable to K⁺. There are 110,000 cations and 110,000 anions in each fluid compartment. In the center of the cell

• A) there would be a slight negative charge.
• B) there would be a strong negative charge.
• C) the overall charge neutrality would be maintained independently of the membrane potential.
• D) there would be a slight positive charge.

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