A pairing of MHC and antigene presented on a cell surface is what T immune cells recognize and use to make antibodies.   True False Active immunity is the result of adaptive immune response and usually lasts a lifetime. Active immunity can be natural (result of exposure to the pathogen) or artificial – result of exposure to the dead pathogen or just its antigen

Q: Adaptive immune responses are slow to develop, taking days to weeks after exposure to reach their…

A: Immunity It is a resistance acquired by a host towards an injury causing microbes or overall ability…

Q: Some species, like camels, alpacas, and llamas, have evolved variant forms of immunoglobulin…

A: Antigens activate your immune response, causing it to unleash an antibody response. Antibodies…

Q: In which of the following ways are T-cell receptors distinct from immunoglobulins? (Select all that…

A: The T-cell receptor (TCR) is a protein complex found on the surface of T cells or T lymphocytes.

Q: There are different pathways by which B - cells can be activated, one of them is CD4 T - cells…

A: B cells are at the heart of the adaptive humoral immune system, mediating the development of…

Q: Antibodies produced by one's own immune system can last up to about six months in the bloodstream,…

A: Antibody  Antibody is Y shaped molecules which are made up of proteins. They help in fighting with…

Q: Several different subsets of innate lymphoid cells exist, and each is specialized to respond to a…

A: Lymphoid Cells  Lymphatic tissue is a connective tissue consisting of different types of lymphoid…

Q: Which of the following interactions will NOT provoke an immune response?     A. Endogenous antigen +…

A: Ans - d) Endogenous antigen + MHC Class I + BCR, will not provoke an immune response. The two types…

Q: Which of the following complementarity determining regions (CDRS) of antibodies is sequentially and…

A: The immune system of the body governs the body’s ability to fight against the destructive actions of…

Q: Which of the following defines a memory cell?   Microorganism that typically lives on the human body…

A: Primary response- the immune response that occurs during the body's first encounter with a…

Q: A live vaccine (aka attenuated vaccine) contains  antibodies.   a pathogen that does not contain…

A: Vaccination is a way of providing immunity against a particular pathogen. The immune system fights…

Q: The difference between innate immunity and adaptive immunity is that     adaptive immunity attacks…

A: Immunity  Immunity is the defence mechanism of organisms body system. It protect the body from…

Q: True/False: Antibody binding to a pathogen surface is greatly enhanced when both antigen-binding…

A: Antibodies are specialized proteins produced by the body in response to a pathogen that has entered…

Q: Which of the following statement is TRUE about effector cells? (Select all that apply)…

A: Effector cells are produced once adaptive immune response is activated because adaptive immune cells…

Q: How many types of “foreign molecules” (use the proper term where needed) does each cell recognize?…

A: Antigens can be classified according to their source: Antigens from outside the body Exogenous…

Q: What occurs in a cell-mediated immune response? Select all that apply

A: Cell-mediated immune response is the type of immune response that involves activation of specialized…

Q: Based on the information provided in Figure 22.21, what would be the likely effect of a mutation…

A: Antigens are the foreign substances that enter our body to incite an immune response. Antigens are…

Q: may be expressed by any nucleated cell and are recognized by T lymphocytes   both may be expressed…

A: MHC complex are of Two types MHC class 1 are present on all nucleated cell and presents antigen on…

Q: Which of the following steps are part of the processing of antigen by immune cells? Select all that…

A: Antigen processing It is also called the cytosolic pathway. It i.s an immunological process which…

Q: Which of the following is true about innate immune system? Check all that apply. PAMPs recognize…

A: Introduction  Immunity is an ability of an organism to fight against a particular infection. There…

Q: Which of the following is NOT true about the production of monoclonal antibodies? what option below…

A: Antibody : An antibody is a protein that sticks to a specific protein called an antigen.  Antibodies…

Q: Which of the following statements is the most accurate concerning lymphocytes? a. T cells and B…

A: Lymphocytes are the cells that help to fight the microorganism that cause diseases. In normal human…

Q: Which of the following statements are accurate? T cells, B cells, and Natural killer cells are…

A: According to guidelines we have to answer the first question only. so please kindly post the…

Q: Which of the following explains why dendritic cells, but not macrophages or B cells, contribute to…

A: The immune system provides the body with the ability to prevent diseases or infections in the body.…

Q: n addition to phagocytosis, neutrophils use a process called NETs.  Which one of the following…

A: NET:_ Neutrophil Extracellular Traps These are concerned with extracellular pathogen killing with…

Q: In the secondary immune response, naïve B cells are inhibited. Explain the molecular mechanism…

A: Antigen recognition by Ig receptors and extracellular signaling by CD4+ T cells (thymus-dependent)…

Q: Antibody diversity is generated by multiple mechanisms, each of which contributes to the generation…

A: Antigens are substances that activate the immune system of the body. Antibodies are antigen-binding…

Q: Can a mature B Cell produce an epitope-specific antibody first and then switch to make an antibody…

A: Since we only answer one question at a time, therefore, we are answering the first question listed…

Q: Which of the following statements best explains why the immune system can continue to make…

A: Rituximab is a medication that will be mostly used for treating rheumatoid arthritis as well as…

Q: The T-cell receptor gene segments are arranged in a similar pattern to immunoglobulin gene segments…

A: Whereas both B cells and T cells play a role in eliciting an immune system response, the primary…

Q: MHC)

A:

Q: Which compound is most likely responsible for initiating the inflammation response that results from…

A: An autoimmune disease's symptoms vary depending on whatever region of your body is afflicted. The…

Q: In a mixed lymphocyte reaction, T cells from individual A make a robust response to…

A: Immunity is an organism's ability to defend against a particular disease or through the activation…

Q: antibody surface involved in antigen binding varies depending on the size and nature of the antigen.…

A: Antibody: These are the Y shaped protein molecule which has capacity to bind or react with the…

Q: What is the advantage (in terms of having an effective immune system) of having gene segments that…

A: Advantages of having gene segments which are result of recombinantion rather than pre decided genes…

Q: All of the following contribute to the establishment and maintenance of long-lived memory B cells…

A: B cells are lymphocytes which are important for the adaptive immune system's humoral defense…

Q: All antigen are not immunogen but all immunogen  are antigen- please Briefly explain

A: Answer- Antigens are any foreign substance that can evoke an immunological response after the…

Q: Of the following, which should NOT occur in order to facilitate T-cell selection in the thymus?…

A: T-cells are the part of immune system that kills the foreign pathogen in specific manner. It is…

Q: Some antibody is passed across the placenta from mother to fetus during gestation. This type of…

A: Naturally acquired active immunity occurs when the person is exposed to a live pathogen, develops…

Q: are substances that provoke a specific immune response which is so discriminating that only a single…

A: The human body has immune system that Clears foreign substances and fight against pathogens. There…

Q: hinge region Fc Fab kappa alpha chain Drag answer here Drag answer here. Drag answer here Drag…

A: The structure of the antibody is Y shaped with four polypeptide chains with two heavy and two light…

Q: A two-month-old baby is found to lack class I MHC molecules. How would this defect impact his…

A: A large locus present on vertebrate DNA known as the Major Histocompatibility Complex (MHC), has a…

Q: Which of the following is NOT an event that can result in an autoimmune disease? Which of the…

A: Autoimmunity can be referred to as the condition when the immune system of the body starts acting…

Q: The effector mechanisms that are recruited to clear an infection depend on the infectious agent.  In…

A: The immune system of a human being is concerned with the immune response towards the foreign…

Q: n a table, illustrate the differences between natural, artificial, active and passive immunity with…

A: Microorganisms are always surrounding humans, looking for an opportunistic host. These viruses have…

Q: Complement is a cytokine that can self- activate to cause an innate immune response or complement…

A: Innate immunity  It is a general type of defense non specific and present since birth. They do not…

Q: Which of the following should be the same inidentical twins?(A) the set of antibodies produced(B)…

A: The term MHC denotes Major Histocompatibility complex molecule. This molecule is the host protein…

Q: Which of the following is INCORRECT? Select one: The route of antigen administration plays a role…

A: The route of administration affect sensitization. In immunization, intradermal, subcutaneous, and…

Q: Which of the following statements is not true?(A) An antibody has more than one antigen-binding…

A: The ability of the body to defend itself against invading foreign agents like bacteria, viruses, or…

Q: The virus shown in the diagram below is only able to infect and replicate in epithelial cells. In…

A: Immune system comprises several defense mechanisms against infection. Immune cells are involved in…