Which of the Following Is an Example of Equilibrium

question 32

Multiple Choice

Which of the following is an example of equilibrium?

• A)A substance moves into and out of a cell at the same rate.
• B)A concentration gradient drives the movement of a substance into a cell.
• C)ATP powers movement of a substance into a cell against its concentration gradient.
• D)An electrochemical gradient drives the movement of a substance into a cell.

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Definitions:

Sunk Cost

A cost that has already been incurred and cannot be recovered.

Contribution Format

An income statement format that separates fixed and variable costs, showing contribution margin which is sales revenue minus variable costs.

Contribution Margin

The amount by which sales revenue exceeds variable costs of production, indicating how much contributes to covering fixed costs.

Variable Expenses

Costs that vary in proportion to changes in the level of activity or volume of production.