Homework Answers
Usually, mast cells bind IgE. When the allergen or antigens enter into body IgE binds with allergens or antigens and mast cells releases histamines which initiate the hypersensitivity reaction in the human body.
The statement mast cells bind IgE in hypersensitivity reactions is not true in the above-given statements.
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D Question 10 Which of the following cell type and cell function statements is NOT true:...
Match each description or example with the correct type of hypersensitivity. Type I (acute) hypersensitivity Type...
Match each description or example with the correct type of hypersensitivity. Type I (acute) hypersensitivity Type II (cytotoxic) hypersensitivity Type III (immune complex) hypersensitivity Type IV (delayed) hypersensitivity Answer Bank Antigens bind to IgE on basophils and mast cells and stimulate them to secrete vasoactive substances. IgG or IgM binds to an antigen, which leads to lysis or opsonization of target cell. T cells elicit a response 12-72 hours after initial exposure. Anaphylactic shock is an example of this type...
Name: 43. Antigens can be found on... (a) flagella (b) cell walls (c) human cells (d)...
Name: 43. Antigens can be found on... (a) flagella (b) cell walls (c) human cells (d) all of the above 40. What is the site where stem cells develop and mature into T lymphocytes in humans? (a) spice (b) thymus (c) blood (d) bone marrow 47. Antigen presentation with MHC I molecules sensitizes which type of T cell? (a) cytotoxic T cells (b) helper T cells (c) plasma cells (d) all of the above 48. How does the Tc cell...
Please match the description to the type of hypersensitivity. 1. acute reaction to an allergen mediated...
Please match the description to the type of hypersensitivity. 1. acute reaction to an allergen mediated by IgE, mast cells, basophils, and histamine (Click to select) 2. a reaction mediated by T cells and the effector cells enlisted by them. Generally, this reaction takes a day or two to develop after exposure to the provoking antigen (Click to select) 3. mediated by IgG antibody-antigen complexes, which are deposited in basement membranes of some organs and invoke an inflammatory response (Click...
antibodies A specific B cell is activated when an) from a pathogen binds to one of...
antibodies A specific B cell is activated when an) from a pathogen binds to one of the _ on its surface. Activation also requires from helper T cells. 1 antigen antigen This activated cell then begins dividing into memory B cells, which will participate in the secondary immune response, and cells that will act as protein factories in this immune response. plasma During the primary immune response, these cells secrete cytokines During the secondary immune response, the rapidly, giving rise...
No explanation needed. 1. T cells with high affinity for self antigens are eliminated during T...
No explanation needed. 1. T cells with high affinity for self antigens are eliminated during T cell selection because A. These cells have limited lifespan B. These cells do not recycle C. These cells can bind to self antigen on body cells leading to body cell destruction D. These cells have no memory 2. HIGM results from a mutation in _______. A. CD40 B. CD40L C. CD28 D. CD80/86 3. CSR results in chromosomal rearrangement of IgM to produce A....
Which of the following statements is correct about the production of antibodies after stimulation of B...
Which of the following statements is correct about the production of antibodies after stimulation of B cells by antigen? Multiple Choice a. Later, under the influence of T-helper cells, IgM-secreting plasma cells may stop producing and secreting IgM in favor of another antibody class, usually IgD. b. Pentameric IgM serves as the B-cell receptor for antigen, and monomeric IgM is the first type of antibody secreted after B-cell activation. c. Class switching occurs when a cell secreting IgM changes the...
1. Which type of antibodies are present in the blood of a person with type O,...
1. Which type of antibodies are present in the blood of a person with type O, Rh- blood? Anti-A, anti-B and anti-Rh antibodies, Anti-B and anti-Rh antibodies, Anti-O and anti-Rh antibodies ,Anti-A and anti-B antibodies, Anti-A and anti-Rh antibodies 2. Immunosuppressive medications such as cyclosporin A and tacrolimus suppress cellular-signaling mechanisms in?. T lymphocytes, suppressing T cell proliferation and responses, all white blood cells , mast cells and basophils, preventing degranulation., B lymphocytes, preventing antibody production, macrophages and neutrophils,...
A 48-year-old male patient arrives at the hospital after being rescued from a car accident in...
A 48-year-old male patient arrives at the hospital after being rescued from a car accident in which he suffered a serious hemorrhage. He needs a blood transfusion to stabilize. Blood typing test discovers he is A+, Which of the following blood types can he receive? Check all that apply. Check All That Apply A+ and A- B+ and B- AB+ and AB- O+ and O- Please match the description to the type of hypersensitivity. 1. acute reaction to an allergen...
45. Antigens can be found on... (a) flagella (b ell walls (c) human cells (@a 46....
45. Antigens can be found on... (a) flagella (b ell walls (c) human cells (@a 46. What is the site where stem cells develop and mature into T lymphocytes in humans (b) thymus (c) blood (d) bone marrow b) cell walls (c) human cells (d) all of the above develop and mature into T lymphocytes in humans? (a) spleen 41. Antigen presentation with MHC I molecules sensities which type of T cell? (a) cytotox C (b) helper T cells (c)...
4) Use the questions below to help you briefly describe the process by which the parts...
4) Use the questions below to help you briefly describe the process by which the parts of the 3rd line of defense would work together to target extracellular pollen. Be sure to provide a BRIEF 1 sentence explanation of each part’s function. 4a) What specific immune cells would be activated by the CD4+ T helper cells in response to an allergic response to pollen? How will these cells be used to inactivate the pollen? CD4+ T helper cells will secrete...
Match each description or example with the correct type of hypersensitivity. Type I (acute) hypersensitivity Type II (cytotoxic) hypersensitivity Type III (immune complex) hypersensitivity Type IV (delayed) hypersensitivity Answer Bank Antigens bind to IgE on basophils and mast cells and stimulate them to secrete vasoactive substances. IgG or IgM binds to an antigen, which leads to lysis or opsonization of target cell. T cells elicit a response 12-72 hours after initial exposure. Anaphylactic shock is an example of this type...
Name: 43. Antigens can be found on... (a) flagella (b) cell walls (c) human cells (d) all of the above 40. What is the site where stem cells develop and mature into T lymphocytes in humans? (a) spice (b) thymus (c) blood (d) bone marrow 47. Antigen presentation with MHC I molecules sensitizes which type of T cell? (a) cytotoxic T cells (b) helper T cells (c) plasma cells (d) all of the above 48. How does the Tc cell...
Please match the description to the type of hypersensitivity. 1. acute reaction to an allergen mediated by IgE, mast cells, basophils, and histamine (Click to select) 2. a reaction mediated by T cells and the effector cells enlisted by them. Generally, this reaction takes a day or two to develop after exposure to the provoking antigen (Click to select) 3. mediated by IgG antibody-antigen complexes, which are deposited in basement membranes of some organs and invoke an inflammatory response (Click...
antibodies A specific B cell is activated when an) from a pathogen binds to one of the _ on its surface. Activation also requires from helper T cells. 1 antigen antigen This activated cell then begins dividing into memory B cells, which will participate in the secondary immune response, and cells that will act as protein factories in this immune response. plasma During the primary immune response, these cells secrete cytokines During the secondary immune response, the rapidly, giving rise...
A 48-year-old male patient arrives at the hospital after being rescued from a car accident in which he suffered a serious hemorrhage. He needs a blood transfusion to stabilize. Blood typing test discovers he is A+, Which of the following blood types can he receive? Check all that apply. Check All That Apply A+ and A- B+ and B- AB+ and AB- O+ and O- Please match the description to the type of hypersensitivity. 1. acute reaction to an allergen...
45. Antigens can be found on... (a) flagella (b ell walls (c) human cells (@a 46. What is the site where stem cells develop and mature into T lymphocytes in humans (b) thymus (c) blood (d) bone marrow b) cell walls (c) human cells (d) all of the above develop and mature into T lymphocytes in humans? (a) spleen 41. Antigen presentation with MHC I molecules sensities which type of T cell? (a) cytotox C (b) helper T cells (c)...
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