Which of the Following Is Incorrect Regarding the Complement Fixation

question 53

Multiple Choice

Which of the following is incorrect regarding the complement fixation test?

• A)First antigen and antibody are allowed to react.
• B)Purified complement proteins are added to the antigen-antibody tube.
• C)Sheep red blood cells are added to the antigen-antibody-complement mixture.
• D)Hemolysis of the sheep red blood cells occurs in a positive test result.
• E)None of the choices are correct.

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Definitions:

Plasmolysis

The process in which cells lose water in a hypertonic solution, resulting in the shrinkage of the cell membrane away from the cell wall.

Hypertonic

A solution that has a higher concentration of solutes compared to another solution, leading to potential osmotic movement of water out of a cell.

Extracellular Fluid

Fluid that exists outside the cells of an organism, including blood plasma, lymph, and interstitial fluid, providing a medium for transport of nutrients and waste.

Solute Concentration

The amount of a substance dissolved in a unit volume of solution, often referred to in terms of molarity, molality, or mass percent.