Which of the Following Is Correct Concerning the Sarcoplasmic Reticulum $\mu$

question 42

Multiple Choice

Which of the following is correct concerning the sarcoplasmic reticulum Ca²⁺ ATPase?

• A) It is an example of an ABC transporter that interconverts between closed and open forms.
• B) It transports Ca²⁺ from the sarcoplasmic reticulum into the cytoplasm.
• C) This P-type ATPase maintains a calcium ion concentration of approximately 0.1 \(\mu\)M in the cytosol and 1.5 mM in the sarcoplasmic reticulum.
• D) One Ca²⁺ is transported for each ATP hydrolyzed.
• E) None of the answers is correct.

---

Definitions:

Net Income

The total profit or loss of a business after all expenses, taxes, and costs have been subtracted from total revenue.

Interest Expense

The cost incurred by an entity for borrowed funds over a specific period, including loans, bonds, or lines of credit.

Earnings Per Share

A company's net income divided by the number of outstanding shares of its common stock.

Net Income

The total earnings of a company after subtracting all expenses, including taxes and operational costs, from its total revenue.