Which Statement About Class Switching Is True

question 39

Multiple Choice

Which statement about class switching is true?

• A) The first class of immunoglobulin a B cell makes is IgG.
• B) A DNA deletion in the constant region produces an immunoglobulin with a different function.
• C) When class switching occurs, the class of the new immunoglobulin depends on which of the variable region genes is deleted.
• D) Class switching produces an immunoglobulin with different antigen specificity.
• E) A DNA deletion in the variable region allows a cell making IgA to switch to making IgM.

---

Definitions:

Fair-Value Hedge

A hedge of the exposure to changes in fair value of an asset or liability or an unrecognized firm commitment, which could affect profit or loss.

Forward Contract

a financial agreement between two parties to buy or sell an asset at a future date for a price agreed upon today, commonly used for hedging and speculation.

Gross Method

The gross method is an accounting practice whereby discounts are not considered in the recording of purchases; discounts taken are recorded as income.

Forward Contract

A specialized agreement crafted between two parties to transact an asset at a certain price on a future agreed date.