Which of the Following Are True Concerning Fluoride and Bacterial

question 32

Multiple Choice

Which of the following are true concerning fluoride and bacterial inhibition?
1) The fluoride ion freely crosses the bacterial cell wall.
2) Some of the fluoride present in plaque fluid combines with the hydrogen ion of the acid to become hydrofluoric acid.
3) Hydrofluoric acid diffuses into the cell.
4) Once in the acid cytoplasm of the cell,the hydrofluoric acid separates into the fluoride ion and the hydrogen ion.

• A) 1,2,3,4
• B) 1,2,3
• C) 2,3
• D) 1,4

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Definitions:

Variable Overhead

Costs that fluctuate with the level of production activity, such as utilities for the manufacturing plant or commissions for sales staff.

Efficiency Variance

The difference between the actual amount of resources used in production and the amount that was expected to be used, indicating the level of efficiency in using materials, labor, and overhead.

Denominator Level

A term used in cost accounting to describe the level at which fixed costs are allocated to units of production.

Predetermined Overhead Rate

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