The Complement Fixation Test Uses Red Blood Cells as the Target

question 3

Multiple Choice

The complement fixation test uses red blood cells as the target for complement activation. Test serum containing antibodies is combined with a known amount of antigen in a tube, and then the RBCs and antibodies against the RBCs are added. A positive result for the complement fixation test would be

• A) a line of precipitate near the bottom of the tube.
• B) a cloudy solution in the tube.
• C) a solution that is clear due to precipitation of RBCs.
• D) a fluorescent precipitate.
• E) loss of color in the tube.

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Definitions:

Manufacturing Costs

The expenses involved in the production of goods, including labor, raw materials, and overhead.

Batch-Level Activities

Activities that are performed each time a batch of goods is handled or processed, regardless of how many units are in the batch. The amount of resource consumed depends on the number of batches run rather than on the number of units in the batch.

Unit-Level Activities

Tasks or processes that vary directly with the number of units produced or services provided.

Activity-Based Costing

A costing method that assigns overhead and indirect costs to specific activities based on their use of resources.