The Pattern Recognition Receptors on Cells of the Innate Immune

question 41

Multiple Choice

The pattern recognition receptors on cells of the innate immune system are genetically encoded, meaning that their sequences and specificities are determined prior to the development of the individual. In contrast, the antigen receptors of B and T lymphocytes arise from a random rearrangement process that occurs differently in each lymphocyte as it develops. One potential problem entailed by the random process that generates lymphocyte antigen receptors is the possibility that:

• A) Some antigen receptors might recognize the individuals on cells or antigens
• B) Many lymphocytes might generate antigen receptors that don't recognize anything
• C) Many lymphocytes might generate antigen receptors that recognize multiple different pathogens
• D) Some antigen receptors might recognize foreign tissues and lead to graft rejection during organ transplantation
• E) Some lymphocytes might not generate functional antigen receptor proteins

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Definitions:

MgBr

Magnesium bromide is a chemical compound consisting of magnesium and bromine, often used in organic synthesis as a Grignard reagent.

Organic Product(s)

Substances derived from living organisms or containing carbon compounds.

Major

In the context of chemistry and reactions, "major" refers to the primary or most abundant product or outcome in a mixture of several possible results.

Reaction

A process in which one or more substances are changed into one or more new substances through the breaking and forming of chemical bonds.