Carbohydrate Chains Attached to the C_H2 Domains of IgA, IgD

question 19

Multiple Choice

Carbohydrate chains attached to the C_H2 domains of IgA, IgD, and IgG are believed to

• A)allow for closer contact between partner chains.
• B)confer stability to the molecule resulting in a higher desaturation temperature.
• C)prevent protease degradation.
• D)provide space for complement protein binding.
• E)increase binding affinity for antigen.

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Definitions:

Ore

A rock, sediment, or other material that can be mined for a profit.

Mineral Deposit

Concentrated accumulations of minerals from which economically valuable materials can be extracted.

Oxide

1. Any member of a group of minerals that consist of oxygen bonded with a metallic element, like iron. 2. Mineralized rock that contains minerals, especially those of iron and copper, that formed near the surface or in other oxidizing conditions.

Sulfide

A compound characterized by the presence of sulfur bonded with a metallic element or another nonmetal.