23 Questions
Which of the following is NOT a characteristic of high molecular weight antigens?
Can induce immune response on their own
What is the term used to describe the immunologically active regions of an immunogen that bind to antigen-specific receptors on lymphocytes?
Epitopes
Why are parenteral routes of administration more immunogenic compared to the oral route?
They allow direct access to lymphocytes
What is the main property that makes a molecule more effective as an antigen?
Being a stable molecule
What is the role of carrier molecules in relation to incomplete antigens or haptens?
Make incomplete antigens complete antigens
Which characteristic does NOT contribute to the antigenicity of a molecule?
Small molecular mass between 5000 and 100,000 daltons
What is the main characteristic of an immunogen?
It causes the generation of antibodies
Which of the following is NOT a type of antigen according to the text?
Hydrocarbons
What is the role of Major Histocompatibility Complex (MHC) in antigen presentation?
It presents antigens to T cells
Which statement accurately describes haptens?
Haptens only become immunogenic when coupled with carrier molecules
What is the distinguishing feature of a Complete Antigen or Immunogen?
It possesses antigenic properties on its own
Which of the following is an example of an antigen formed within the body?
Bacterial toxins
What is the term used to describe the small area on the antigen molecule that reacts specifically with antibodies?
Epitope
Which cells are responsible for trapping viral antigens in the body fluids?
Macrophages
Which type of antigenic determinants are mainly recognized by T cells?
Linear determinants
What process mainly mediates the uptake of exogenous antigens by APCs?
Phagocytosis
Which type of immunogens are nucleic acids considered to be?
Poorly immunogenic
Which of the following is an example of endogenous antigens?
Antigens generated within cells due to infection
Which type of human tissue antigens include Major Histocompatibility Complex (MHC) molecules?
Histocompatibility antigens
What type of antigens are exogenous antigens?
Antigens from outside the body
Which of the following is a type of bacterial antigen related to bacterial cells?
Capsular antigen
What can some exogenous antigens transform into, after entering the body?
Endogenous antigens
Why are lipids generally considered non-immunogenic?
They lack antigenic determinants
Learn about antigens, epitopes, types, sources, processing, presentation, and the role of Major Histocompatibility Complex (MHC) in immunity generation in this presentation by Dr. Muna Oqal. Definitions of key terms like antigens and their importance are also covered.
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