8. Which statement is incorrect? a. IgG is the most abundant antibody in blood b. Antibodies can exist at the surface of a B cell, or circulate freely in blood. c. IgM is found in the lining of the genitourinary, gastrointestinal and respiratory tracts d. IgE is involved allergic reactions e. Macrophages are involved in chronic infections

Q: vaccination provides natural passive immunity A. True B. False 1e. Lymph nodes have several…

A: Answer 1a Toxoids and vaccine function similarly  True this statement is correct.  Answer 1b Active…

Q: 9. Which of the following antibody classes or isotypes facilitate the sequential binding of the C1,…

A: Antibodies are also known as immunoglobulin.These are the protein which are made by plasma cell .…

Q: b Production of complement c. Production of IL-6 d. Production of CRP e. All of the above 41. NK…

A: Hey, since there are multiple questions posted, we will answer first two questions (41 and 42). If…

Q: 28. The molecules mediating signal transduction on a B-cell following antigen binding to BCR are…

A: B cell It is a type of lymphocyte which is involved in providing the humoral immunity component of…

Q: Which of the following statements is most correct regarding SCIDs?a. They are the least severe form…

A: Severe Combined Immunodeficiency (SCID) is a genetic immunodeficiency illness that renders the…

Q: 22. Your patient is born without B cells. He cannot a. fight off intracellular infections b. have a…

A: Here we have to describe if a patient is born without B cells what will happen or what she/he cannot…

Q: Plasma cells and memory B cells differentiate most immediately from Select one: a. centrocytes b.…

A: Introduction There are two types of lymphocytes found in our immune system: T lymphocytes and B…

Q: 29. T-cell dependent antigens can a. directly stimulate B cells to multiply and produce antibodies…

A: The correct answer is (c) restrict antibody formation. T-cell dependent antigens require the help of…

Q: 10. NK cells recognize and kill abnormal host cells that are: A. opsonized with IgE. B. lacking…

A: According to bartleby expert guidelines, when multiple questions are posted we are allowed to answer…

Q: Type II hypersensitivity reaction                                                  Type III…

A: Type IV hypersensitivity- Effector T cells specific for the sensitizing Ag Type II hypersensitivity…

Q: 30. A nursing baby: a. Lacks innate immunity  b. Lacks antimicrobial related immunity  c. Lacks…

A: In humans, the period of gestation or pregnancy is 280 days. During this period, the fetus develops…

Q: hoose the best answer(s)   a. 'Lymphadenopathy' is swelling of the lymph nodes, and is a common…

A: T cells and B cells are major components of the adaptive immune response. T cells are involved in…

Q: 6. In a healthy person, which of the following cells is the most numerous innate immune cells in the…

A: The most numerous and crucial biological component of the innate immune response is the neutrophil,…

Q: 14. Predominant cell types involved in the humoral immune response are: A. eosinophils. В.…

A: Answer No 14 -- Humoral Immunity -- There are two types of immune responses             ( i )…

Q: 10. A given B cell expresses only maternally or paternally derived heavy chains but never both. This…

A: Immunity is a phenomenon build up inside the body of an organism to fight against disease and…

Q: When first exposed to a foreign molecule, are the first class of antibodies generated a. cytokines…

A: The immune response is a set of responsive mechanisms carried out by the immune system of the body…

Q: B cells are most important in the _______ immunity type of _______ immunity.

A: Immunity is the resistance to disease. The two important components of immunity are innate and…

Q: 2. B cells proliferate and differentiate into plasma cells and memory cells in the secondary…

A: Introduction :- Differentiated B-lymphocyte white blood cells called plasma cells are able to…

Q: Which of the following antibody classes or isotypes facilitate the sequential binding of the C1, C4,…

A: Answer : Option "E" is correct - IgM and IgG

Q: The germinal center of a lymph node   a. Is the location of B cells undergoing clonal expansion…

A: Lymph nodes are small, bean-shaped glands that are the part of the lymphatic system. They are…

Q: 1. which antibody isotypes is in lowest concentration in serum? a- IGA b- IgD c-IgG d-IgE e-…

A:

Q: Protein receptors found on macrophages that recognize foreign antigens a. toll-like receptors…

A: Macrophages are a type of white blood cell that takes part in protecting the body against foreign…

Q: 1. In central tolerance, 3 mechanisms deviate B cells away from making autoreactive antibody. Which…

A: These are multiple choice questions.

Q: 6. Match the example/scenario provided to the type of humoral immunity. a. active, naturally…

A: The ability of the body to fight back any infection in the body comes from its immune system. The…

Q: ph nodes function to a. provide a site for lymphocyte reproduction b. anchor lymphatic vessels c.…

A: Lymph node is a small bean-shaped structure that is part of the body's immune system. There are…

Q: 4. Which of the following statements about antibodies is incorrect? A. Antibodies are secreted by…

A: Antibodies are the protein substances secreted from specialised cells called B cells. These…

Q: Non-protein antigens are ineffective becase they cant A. Trigger IgM production B. Be used as a…

A: Antigens are any substances with a biological origin and are able to elicit immune reasons by…

Q: Describe the flow of lymph from its origins in interstitial fluid to its emptying into the venous…

A: The lymphatic system is comprised of lymph which is a fluid that circulates through a network of…

Q: 17. What type of immunity is responsible for agglutination of viruses? A. passive immunity B. cell…

A: 'Since you have asked multiple questions, we will solve the first question [17] for you. If you want…

Q: 1.Which of the following statements about antibodies is incorrect? A.Antibodies are secreted by…

A: Hi, Thanks For Your Question.  Answer : Correct Option  Is E(Antibodies eliminate bacteria by…

Q: True or False: The class switch recombination of IgA antibodies is induced by TGF-beta or IL-21, and…

A: 3)It is a false statement.The IgA antibodies switching is done by T cell independent antigens and…

Q: 24. Phagocytes a. Engulf and ingest foreign material b.) Are also known as T lymphocytes C. Are not…

A: Organs, cells, and chemicals make up the immune system, which works collectively to fight pathogens.…

Q: . True or False: Negative selection of transitional B cells in the spleen removes B cell clones…

A: Introduction :- During the selection of B-cells in the bone marrow , There are million of B-cells…