Outline the processes of immune memory and include clonal deletion and clonal selection:
. Define the term “clonal selection”. To which types of immune cells does clonal selection apply?
Drag the terms to their correct locations in this concept map about clonal selection. Reset Help Clonal selection begins with first exposure to Bolig second exposure stimulates stimulates production of cell-mediated Immune response first clone consists of helper T cells and antigen include when stimulated produce Hector cells consists of cytotoxic T memory cells result in result in second clone humoral immune response
QUESTION 14 Clonal selection results in production of: Plasma cells Оа Both plasma cells and memory cells b. Cc Memory cells Antigen presenting cells QUESTION 15 Which acquired immune cells are involved in cell-mediated immunity and destroy virally infected cells through direct contact? a. plasma B cells b.cytotoxic T cells c. helper T cells d. macrophages QUESTION 16 QUESTION 16 Which of the following molecules are not found in filtrate at any stage of processing? a. Red blood cells b....
Describe clonal selection, and which of the formed elements are important in clonal selection and antibody production.
Do you expect clonal selection to occur at the site of an infection or elsewhere? Explain your answer. Are there any sites in the body where you expect little or no immune response, even if a dangerous pathogen is present? What do these sites have in common?
1. The first line of defense include all of the following except (a) mucous membranes and skin (b) Inflammation and fever (c) physical and chemical barriers (d) coughing and sneezing 2. When B cells or T cells recognize an antigen they will eventually make many copies of themselves. Which of the following is the correct order of events? (a) Clonal selection, clonal expansion, clonal deletion (b) clonal expansion, clonal selection, clonal deletion (c) clonal deletion, clonal selection, clonal expansion (d)...
Immune system (select the BEST CORRECT statement) When activated by an antigen, B lymphocytes undergo clonal expansion and give rise to both memory cells and plasma cells. Secreted antibody molecules are derived from B cell receptors through an alternative splicing mechanism that removes the receptor’s transmembrane domain. Although B cell receptors are expressed on the surface of B lymphocytes, they function in the tethering and trapping of foreign antigens and are not linked to intracellular signaling cascades. All of the...
72) Antigen presentation by a Dendritic cell or macrophage causes A) fever B) clonal selection C) a drop in antibody production D) a dangerous drop in blood pressure E) The end of The World A= True B=False 74) Following a second exposure the antibody titre is 1000X higher than the first exposure 75) The response seen is due to toll-like receptors and not memory cells 76) "B" antibodies will be found at high titre following a second exposure to B...
Outline the type of immune responses to diphtheria. Innate and/or adaptive?
QUESTION 21 Select the incorrect pairs. focal infection - infection remains in a specific tissue. Systemic infection - infection spreads to several sites and tissue fluids. Horizontal transfer or transmission - disease spread through a population from one person to another Prodromal stage of an infection - period after period of invasion. Biological vector - arthropods like mosquitoes. sequelae - long-term or permanent damage to tissues or organs caused by an infectious disease. QUESTION 22 Which of the following can...