Characteristics of good antigens include all the following except
What are the characteristics of a good antigen?
Characteristics of a Good Antigen
Large stretches which are not composed of long repeating units. A molecular weight of at least 8 000 to 10 000 Da (however, it must be noted that haptens of only 200 Da molecular weight have been conjugated with a carrier protein) Can undergo processing by the immune system.
Which of the following is not the characteristics of a good antigen?
8. Which of the following is NOT the characteristics of a good antigen. Explanation: A good antigen is defined by its complexity and size, plus its foreignness and dosage. Large size and highly complex antigen are considered as good and more responsive.
What is a characteristic of antigens quizlet?
What is a characteristic of antigens? They stimulate the production of antibodies.
What are the three characteristics of antigen and explain their contribution to the immunogenicity of an antigen?
Immunogenicity of an antigen is determined by four properties; Foreigness, molecular size, chemical composition and heterogenicity and ability to be processed and presented on the surface of Antigen presenting cells (APCs).
Which of the following is not an antigen presenting cells?
Which of the following is not an antigen presenting cell? Answer: D – PMNs do not present antigen; their main function is phagocytosis of materials, as well as producing cytokine. 1 Was this helpful?
Which of the following is a characteristic of complete antigens?
the immune system
| Question | Answer |
|---|---|
| interferons___ | interfere with viral replication within cells |
| which of the following is characteristic of complete antigens? | reactivity with an antibody |
| the primary immune response___ | has a lag period while b cells proliferate and differentiate into plasma cells |
What are the 3 types of antigens?
There are three main types of antigen
The three broad ways to define antigen include exogenous (foreign to the host immune system), endogenous (produced by intracellular bacteria and virus replicating inside a host cell), and autoantigens (produced by the host).
What are the characteristics of the antigen and antibody reaction?
The reaction between antigens and antibodies involves complementary binding sites on the antibody and on the antigen molecules. The sites on the antigen molecule that combine with the binding site of an antibody are known as epitopes.
Which of the following is true of antigens?
Which of the following is true of antigens? Antigens are substances that activate the adaptive immune response.
Which of the following is NOT a phenotypic method of identification?
Which of the following is not a phenotypic method of identification? colony morphology. culturing of the organism is not required.
What is the role of antigen-presenting cells in the cellular response?
An antigen-presenting cell (APC) is an immune cell that detects, engulfs, and informs the adaptive immune response about an infection. When a pathogen is detected, these APCs will phagocytose the pathogen and digest it to form many different fragments of the antigen.
Which of the following is not a class of T cells?
Antigenic is not a type of T-lymphocyte since an antigen is any foreign substance that invades the body.
What do antigen-presenting cells do?
Antigen-presenting cells (APCs) are a heterogeneous group of immune cells that mediate the cellular immune response by processing and presenting antigens for recognition by certain lymphocytes such as T cells.
How do antigens stimulate an immune response?
The binding of the lymphocytes’ receptors to the antigens’ surface molecules stimulates the lymphocytes to multiply and to initiate an immune response—including the production of antibody, the activation of cytotoxic cells, or both—against the antigen.
Which of the following is the best antigen presenting cell?
There are three main types of antigen-presenting cells in peripheral lymphoid organs that can activate T cells—dendritic cells, macrophages, and B cells. The most potent of these are dendritic cells (Figure 24-43), whose only known function is to present foreign antigens to T cells.
What is the most common antigen presenting cell?
Antigen Presenting Cells (APCs) are cells that capture antigens from within the body, and present them to naive T-cells. Many immune system cells can present antigens, but the most common types are macrophages and dendritic cells, which are two types of terminally differentiated leukocytes that arise from monocytes.
Which of the following is true of antigens?
Which of the following is true of antigens? Antigens are substances that activate the adaptive immune response.
What are the types of antigen?
There are several types of antigens, categorized by where they come from. These include exogenous antigens, endogenous antigens, autoantigens and tumor antigens.
What are antigens made of?
In general, antigens are composed of proteins, peptides, and polysaccharides. Any portion of bacteria or viruses, such as surface protein, coat, capsule, toxins, and cell wall, can serve as antigens.
What antigens are present on the blood cells of a person with B blood type?
blood group B – has B antigens with anti-A antibodies in the plasma. blood group O – has no antigens, but both anti-A and anti-B antibodies in the plasma.
Which is a benefit of having an innate immune system quizlet?
Innate immunity is the initial response by the body to eliminate cellular pathogens, such as bacteria and viruses, and prevent infection. Innate immunity provides an immediate, /nonspecific/ response; that is, it targets any invading pathogen and has no memory of prior exposure to the pathogen.