I.S chapt 3

What is the smallest unit of an antigen that can bind to an antibody?

• Epitope

• Paratope

• Hapten

• Carrier

Which term describes a molecule that is antigenic but not immunogenic on its own?

• Epitope

• Carrier

• Hapten

• Adjuvant

What characteristic increases the immunogenicity of an antigen?

• Small size

• Simple chemical structure

• High molecular weight

• Poor foreignness

Which of the following is a function of the Major Histocompatibility Complex (MHC)?

• Destroying antigens

• Transporting antibodies

• Presenting antigenic peptides to T-cells

• Binding to pathogens directly

What class of MHC is found on all nucleated cells?

• MHC I

• MHC II

• MHC III

• MHC IV

MHC II molecules present antigens to which type of T cell?

• CD8+

• Treg

• CD4+

• NK cells

Which cells express MHC class II molecules?

• All body cells

• RBCs

• Professional antigen-presenting cells (APCs)

• Neurons

Which region of MHC genes is responsible for complement components and other immune proteins?

• Class I

• Class II

• Class III

• None

What genetic concept explains the unique set of MHC molecules inherited by an individual?

• Codominance

• Polymorphism

• Haplotype

• Allele

What is the primary determinant of antigen specificity in antibodies?

• Heavy chain constant region

• Light chain constant region

• Variable regions of light and heavy chains

• Fc region