Channel Proteins Allow Ions That Would Not Normally Pass Through

question 106

Multiple Choice

Channel proteins allow ions that would not normally pass through the cell membrane to pass through via the channel. What property of the channel proteins is responsible for this?

• A) A pore of polar amino acid groups
• B) A pore of hydrophobic amino acid groups
• C) A pore of Ca²⁺
• D) All of the above
• E) None of the above

---

Definitions:

Future Earnings Growth Rate

The projected annual rate at which a company’s earnings are expected to increase, affecting the company's stock price and valuation.

Cash Coverage Ratio

A financial metric that measures a company's ability to cover its interest obligations with its cash flow.

Depreciation Expense

Segmenting the financial outlay of a physical asset across its period of service.

EBIT

A financial performance indicator, earnings before interest and taxes, which omits the costs related to interest and income taxes.