​What Crosses the Membrane to Cause an Action Potential

question 138

Multiple Choice

​What crosses the membrane to cause an action potential?

• A)Neurotransmitters
• B)​Water molecules
• C)​Hormones
• D)​Sodium ions

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Definitions:

Break-Even Point

The production level at which total revenues equal total expenses, and the company or project is not making a profit or a loss.

Fixed Operating Costs

The expense that does not change with the level of production or sales over a short period.

Variable Costs

Costs that vary directly with the level of production or output, such as raw materials and labor expenses.

Unit Sales Volume

The total quantity of units sold of a product or service within a specific period.