Cyanide Poisons Mitochondria by Blocking the Final Step in the Electron

question 55

Multiple Choice

Cyanide poisons mitochondria by blocking the final step in the electron transport chain. Human red blood cells placed in an isotonic solution containing cyanide are likely to ________.

• A) retain the normal cell shape, but the mitochondria will be poisoned
• B) lyse as the cyanide concentration increases inside the cell
• C) switch to anaerobic metabolism
• D) be unaffected

---

Definitions:

Predetermined Overhead Rate

A rate calculated before the accounting period begins, used to allocate manufacturing overhead costs to products.

Manufacturing Overhead

All indirect costs associated with manufacturing, excluding direct material and direct labor costs, such as utilities and rent for the manufacturing space.

Machine-Hours

A measure of the amount of time machines are used in the production process, used as a basis for allocating manufacturing overhead costs.

Fixed Manufacturing Overhead

Indirect manufacturing costs that remain constant regardless of the level of production, such as salaries of supervisors and rent of the factory building.