The Ion That Is Mainly Responsible for Maintaining the Positive

question 4

Multiple Choice

The ion that is mainly responsible for maintaining the positive charge found in the extracellular space of a neuron at rest is ______.

• A) potassium
• B) sodium
• C) chlorine
• D) calcium

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Definitions:

Profit Maximized

The point at which a firm's profit is at its highest because marginal cost equals marginal revenue.

Total Cost

The complete cost of production, including both fixed costs that do not change regardless of the output level and variable costs that increase or decrease with the level of production.

Perfectly Competitive

A market structure characterized by numerous small firms, identical products, and free entry and exit, leading to firms being price takers.

Marginal Revenue

The supplementary earnings obtained through the sale of one more unit of any good or service.