Which of the Following Situations Occurs in Electrically Excitable Cells

question 22

Multiple Choice

Which of the following situations occurs in electrically excitable cells?

• A)When Na+ ion channels open,K+ ion channels close.
• B)The sodium-potassium exchange pump moves sodium into the cell.
• C)Depolarization causes voltage-gated sodium ion channels to open.
• D)Ligand-gated sodium ion channels are opened by high extracellular calcium levels.
• E)Proteins tend to diffuse out of the cell.

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Definitions:

Absorption Costing

A costing method that includes all manufacturing costs, direct materials, direct labor, and both variable and fixed manufacturing overhead, in the cost of a product.

Cost Structure

The relative proportion of fixed, variable, and mixed costs in an organization.

Unit Product Cost

The total cost to produce one unit of product, including direct materials, direct labor, and manufacturing overhead.

Common Fixed Expenses

Expenses that remain constant in total amount and are not affected by changes in business activity level, shared across multiple business segments or products.