Homework Answers
1. A plasma cell is a B cell that secretes antibodies. It produces the antibody of a single specificity related to that on the surface of parent B cells. When antigen binds to the B cells it gets activated and produces its clone. All the clones formed are specific to the same parent B cell. So, antibodies produced are of a single specificity and are the same as the parent B cell.
So, the correct answer is A.
B is incorrect as they are not specific to two antigens.
C is incorrect as it does not produce antibodies of the antigen it recognizes.
D is incorrect as it does not produce antibodies specific to lysozyme. Lysozyme is an enzyme that kills bacterial cells.
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A single plasma cell secretes: A Antibody of a single specificity related to that on the...
Produces antibodies; an activated B cell Related to T cells but show no antigen specificity; active...
Produces antibodies; an activated B cell Related to T cells but show no antigen specificity; active against cancer and viral infections Reside throughout the RES; process and present foreign matter to lymphocytes Participate in cell-mediated immunity; modulate immune functions Nonmotile; bound to connective tissue; trigger local inflammatory reactions Small; second most common white blood cell; two types Scarcest type; function in inflammation and allergies; attract white blood cells toward site of infection Mature in bone marrow; part of memory; humoral...
37 through 42 37. lgG, igA, gM, lgD, and lgE are all examples of a. antigens....
37 through 42
37. lgG, igA, gM, lgD, and lgE are all examples of a. antigens. b. isotypes. c. idiotypes. d. allotypes 38. Using the data from the differential white blood cell count table below, which patient profile displays a parasitic infection? Table 15.1 Guidelines for Interpreting White Blood Cell (WBC) Counts writh Diferential a. Patient 1 b. Patient 3 b. Patient 2 d. None 39, A micr would be expected to occur? obe is ingested and broken into fragments...
1. Opsonization involves: Select one: a. The binding of an antibody to an epitope on a...
1. Opsonization involves: Select one: a. The binding of an antibody to an epitope on a pathogen b. Rearrangement V and J regions of the light chain locus c. Recombination of different V, D, and J regions of the heavy chain locus d. Expression of MHC Class I proteins on all nucleated cells for recognition of self e. Subtle mutation of the heavy and light chain genes to optimize antibody structure 2. Which of these produces and secretes antibodies in...
How does activation by T-independent antigens differ from this figure? Extracellular antigens B cell receptors Antigen...
How does activation by T-independent antigens differ
from this figure?
Extracellular antigens B cell receptors Antigen fragments MHC class II with antigen displayed on surface **Cytokines Plasma cell Antibodies T cell B cell B cell 1 APC receptors 2 Antigen is 3 Antigen fragments are T helper cell recognize and phagocytized and displayed on the B cell secretes cytokines, attach to antigen. digested (see surface, attracting a activating a B cell. Figure 17.12). matching T helper cell. Figure 17.5 Activation...
QUESTION 1 What is a heterophile antigen? a. an antigen homospecific to only one antibody. b....
QUESTION 1 What is a heterophile antigen? a. an antigen homospecific to only one antibody. b. an antigen that has been modified to bind to more than one antibody. c. an antigen found only on one etiological agent. d. an antigen common to more than one species and whose distribution is unrelated to its phylogenetic distribution. 1 points QUESTION 2 What is an antigen? a protein synthesized and secreted by T lymphocytes (T cells). All bacterial cells are antigens....
2s Antigen-Antibody interactons ooour in which of the foliowing ways? A Opsonization BNecation A D. Complement...
2s Antigen-Antibody interactons ooour in which of the foliowing ways? A Opsonization BNecation A D. Complement Fixation EAl the above are cormect 26 Antigen binding sites of an anibody are locaed in the A. Light chains alone D. Fab regions of the antbody B Heavy chains sioneCF ion of the antbody E. Soft chains alone 27 Nonspecific chemical defenses include D stomach hydrochlorie acid A. lysozyme E. All of the choices are corredt Blacic acid and electrolytes of sweat Cskins...
D Question 10 Which of the following cell type and cell function statements is NOT true:...
D Question 10 Which of the following cell type and cell function statements is NOT true: O a) Neutrophils function includes phagocytosis b) mast cells bind IgE in hypersensitivity reactions O deffector T helper cells regulate immune function by decreasing immune activity e) memory T helper cell retain the antigen affinity and provide recognition in secondary exposure O d) plasma cells provide antibody secretion Previous No new data to save. Last a
Case Study: As a member of a research team studying a tribe found in a remote...
Case Study: As a member of a research team studying a tribe found in a remote region of New Guinea, you make the astonishing discovery that they have only two V genes for the L chain and three V genes for the H chain of immunoglobulins. Nevertheless, they seem healthy and able to resist the diversity of pathogenic organisms endemic to the area. Suggest how this might be accomplished 1. The DNA for an H chain in a B cell...
which of the following statements about B cells/antibody production is true? a)each individual B cell can...
which of the following statements about B cells/antibody production is true? a)each individual B cell can make different classes of antibodies with one specifically b)each individual B cells is programmed to make antibodies with one specific specificity only c) each individual B cells is programmed to make antibodies with different specificites d) each individual B cells is programmed to make different classes of antibiodies with different specificities e) A AND B are correct
2 points Save M e wch Many antibody-based methods can be applied in clinic to diagnose...
2 points Save M e wch Many antibody-based methods can be applied in clinic to diagnose infectious diseases. The accuracy of these types of tests is relied on the sensitivity and specificity of the particulary of the following method could be the most rapid and specific diagnosis? Ala fluorescent antibody test using a microbial specific polyclonal serum to label the specimen and view it under a microscope B) an indirect enzyme linked Immunosorbent assay using a polyclonal serum against the...
Produces antibodies; an activated B cell Related to T cells but show no antigen specificity; active against cancer and viral infections Reside throughout the RES; process and present foreign matter to lymphocytes Participate in cell-mediated immunity; modulate immune functions Nonmotile; bound to connective tissue; trigger local inflammatory reactions Small; second most common white blood cell; two types Scarcest type; function in inflammation and allergies; attract white blood cells toward site of infection Mature in bone marrow; part of memory; humoral...
37 through 42
37. lgG, igA, gM, lgD, and lgE are all examples of a. antigens. b. isotypes. c. idiotypes. d. allotypes 38. Using the data from the differential white blood cell count table below, which patient profile displays a parasitic infection? Table 15.1 Guidelines for Interpreting White Blood Cell (WBC) Counts writh Diferential a. Patient 1 b. Patient 3 b. Patient 2 d. None 39, A micr would be expected to occur? obe is ingested and broken into fragments...
How does activation by T-independent antigens differ
from this figure?
Extracellular antigens B cell receptors Antigen fragments MHC class II with antigen displayed on surface **Cytokines Plasma cell Antibodies T cell B cell B cell 1 APC receptors 2 Antigen is 3 Antigen fragments are T helper cell recognize and phagocytized and displayed on the B cell secretes cytokines, attach to antigen. digested (see surface, attracting a activating a B cell. Figure 17.12). matching T helper cell. Figure 17.5 Activation...
2s Antigen-Antibody interactons ooour in which of the foliowing ways? A Opsonization BNecation A D. Complement Fixation EAl the above are cormect 26 Antigen binding sites of an anibody are locaed in the A. Light chains alone D. Fab regions of the antbody B Heavy chains sioneCF ion of the antbody E. Soft chains alone 27 Nonspecific chemical defenses include D stomach hydrochlorie acid A. lysozyme E. All of the choices are corredt Blacic acid and electrolytes of sweat Cskins...
D Question 10 Which of the following cell type and cell function statements is NOT true: O a) Neutrophils function includes phagocytosis b) mast cells bind IgE in hypersensitivity reactions O deffector T helper cells regulate immune function by decreasing immune activity e) memory T helper cell retain the antigen affinity and provide recognition in secondary exposure O d) plasma cells provide antibody secretion Previous No new data to save. Last a
Case Study: As a member of a research team studying a tribe found in a remote region of New Guinea, you make the astonishing discovery that they have only two V genes for the L chain and three V genes for the H chain of immunoglobulins. Nevertheless, they seem healthy and able to resist the diversity of pathogenic organisms endemic to the area. Suggest how this might be accomplished 1. The DNA for an H chain in a B cell...
2 points Save M e wch Many antibody-based methods can be applied in clinic to diagnose infectious diseases. The accuracy of these types of tests is relied on the sensitivity and specificity of the particulary of the following method could be the most rapid and specific diagnosis? Ala fluorescent antibody test using a microbial specific polyclonal serum to label the specimen and view it under a microscope B) an indirect enzyme linked Immunosorbent assay using a polyclonal serum against the...
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