An Action Potential Is Regarded as an Example of a Positive

question 63

Multiple Choice

An action potential is regarded as an example of a positive feedback. Which of the following examples below best illustrates the positive feedback aspect of an action potential?

• A) Potassium permeability is about 25 times greater than sodium ions.
• B) Voltage gated potassium ion channels open slowly and remain open long enough to cause hyperpolarization.
• C) A threshold stimulus will cause the opening of voltage gated sodium ion channels that will cause further depolarizing stimulus. This stimulus will open still more voltage gated sodium ion channels.
• D) The sodium potassium pump consistently moves ions as long as ATP is available, and regardless of membrane potential changes.

Understand the purpose and content of consolidated financial statements.

Recognize comprehensive income components and their importance in financial reporting.

Understand the principles of persuasive writing in business.

Identify key strategies for developing effective claim and complaint messages.

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Definitions:

Investing Activity

Transactions involving the acquisition or disposal of non-current assets, including investments in other entities.

Operating Activities

These are the day-to-day activities of a business that involve producing and selling goods or providing services, and include cash flows related to sales, expenses, and working capital.

Investing Activities

Investing Activities involve the acquisition and disposal of long-term assets and investments not included in cash equivalents.

Financing Activities

Transactions and events where cash is raised or repaid to finance the company’s operations or investments, typically involving debt, equity, and dividends.