Which Property of Antibodies Is the Basis for Complement Fixation

question 30

Multiple Choice

Which property of antibodies is the basis for complement fixation tests?

• A) The Fc portion of IgG becomes enzymatically active upon antigen binding.
• B) The Fc portion can trigger the classical complement system upon antigen binding.
• C) Antibodies can bind two antigens simultaneously.
• D) The Fc portion of the molecule can be modified without interfering with antigen binding.
• E) Antibodies can neutralize the ability of viruses to infect cells.

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Definitions:

Useful Life

The expected period over which an asset is anticipated to be economically usable by one or more users.

Double-Declining-Balance Method

An accelerated depreciation method that counts the depreciation of tangible assets at twice the normal rate.

Residual Value

The estimated value of an asset at the end of its useful life, often considered for depreciation purposes.

Depreciation

An accounting method of allocating the cost of a tangible asset over its useful life, representing how much of the asset's value has been used up.