Why does exposure to chickenpox virus confers lifetime immunity? helper T cells do not activate B cells all through life with one exposure B cells produce antibodies that last lifelong antibodies are conferred the power to secret B cells memory cells produced with this exposure survive lifelong memory cells with the virus do not exist after few years

Q: Why is it beneficial for a B cell to become anergic if no TH recognizes an antigen fragment that the…

A: Generally B cell responses to antigen require the interaction of B cells with T helper cells.…

Q: Which answer choice is a part of the adaptive immune response? Eosinophils Mast cells Dendritic…

A: Adaptive immunity involves specialized cells in response to a specific antigen. When an antigen is…

Q: _______and ________are part of the adaptive immune system and able to establish immunological…

A: Immune response is defined as the process where the immune cells of the body recognizes the incoming…

Q: Helper T cells that have been activated   a Can activate macrophages b Can stimulate cytotoxic T…

A: The major histocompatibility complex, abbreviated as MHC, is a set or group of glycoproteins that…

Q: Fever is a systemic inflammatory response resulting from release of pyrogens triggered by mast cells…

A: Fever is a systemic inflammatory response resulting from release of pyrogens triggered by…

Q: Where do T-cells proliferate and mature? Group of answer choices Small intestine Liver Thymus Red…

A: Introduction: The lymphoreticular system comprises of different set of cells. These cells includes,…

Q: Match each component of the immune system that we studied to its role in defending you against…

A: There are mainly two type of immunity; innate immunity and adaptive immunity. Innate immunity also…

Q: Which cells would make the antibodies to help the body fight off SLE? O Cytotoxic T-Cells Natural…

A: SLE is an autoimmune disorder in which immune system attack self cells.  Cytotoxic T cells and…

Q: are part of the adaptive immune system and able to establish immunological and memory. These mark…

A: Immune response is defined as the process through which the body's immune cells recognise invading…

Q: Which of the following vaccines is safe to administer to a patient who has a T-cell deficiency?…

A: T-cell deficiency is a deficiency of T-cells, due to reduced T-cell function, which induces…

Q: Mature B cells in the periphery may be made tolerant (unresponsive) by- The lack of co-stimulatory…

A: Mature B cell lack of response can lead to the cause of autoimmune diseases. These mature B cells…

Q: Why would COVID vaccines possibly help senior citizens to fight off COVID-19 if they thymus has…

A: The immune system's thymus gland is in charge of creating T cells, which are crucial for warding off…

Q: Plasma cells are vital for protection against infection, but memory B cells are not.  State what you…

A: The human body has the potential to survive and fight against infection and toxins by certain organs…

Q: What labels goes to active immunity and passive immunity

A: Immune response is the physiologial process which involves our body immune cells to identify and…

Q: thymus positive selection negative selection medulla bone marrow cortex Drag corre In the thym…

A: T-cell development is a complex process that occurs primarily in the thymus and involves both…

Q: What co-receptor do Helper T cells use? MHC2 CDK1 CD4 O CD8

A: What co-receptor do Helper T cells use? A. MHC2 B. CDK1 C. CD4 D. CD8 Introduction: Helper T cell is…

Q: // Which of the following is NOT true of Helper T cells. It recognizes virus peptides on an…

A: The immune system of the body is the system which protects the body against attack by foreign…

Q: What will be the direct result of the interaction shown in this figure? CD4 TCR CD28 Epitope CD80…

A: The adaptive immune system is a specific defense mechanism that recognizes a foreign antigen or…

Q: Reed Sternberg cells are derived from which type of normal cell?   T-cells   B-lymphocytes…

A: Immune system is system which helps our body to fight against the foreign substances which will…

Q: B cells are only able to interact with pieces of antigens presented to it by an APC. True False

A: Antigen-presenting cells (APC) are the cells that display antigen complexed with major…

Q: Which of the following is NOT part of the body's third line of defense? Antibodies O Cytotoxic…

A: To combat foreign invaders such as viruses, bacteria, and fungi, the human body does have three…

Q: Which of the following is expressed on B cells and increases their ability to respond to antigen?…

A: B cells are white blood cells that play an important role in the immune response. When they come…

Q: Which cells possess MHC I? T cells CD 8+ Body cells (except mature RBCs) Dendritic cells OT cells CD…

A: Introduction:  MHC CLASS I :  All nucleated cells in the bodies of vertebrates have MHC class I…

Q: which type of t-cells is specifically targeted by HIV

A: Human immunodeficiency virus (HIV) is a causative agent for the development of AIDS. Once entered,…

Q: What is the rate-limiting step that causes the death of approximately 50% of transitional B cells…

A: B cells or B lymphocytes are important players in the adaptive immune response that is responsible…

Q: Which of the following generates long-lasting adaptive immune memory? Normal microbiota inhibiting…

A: Immune system:It is the body's main organ system. Also called the biological defense system in that…

Q: in a primary response to an exposure to an antigen Group of answer choices antibodies are produced…

A: The immune response is the mechanism of the human immune system in which the body responds toward…

Q: This type of lymphocyte contains CD4 receptor sites used by the HIV virus. All of the above Helper…

A: Cd4 is a glycoprotein that serves as a co-receptor for the T-cell receptor.  CD4 is found on the…

Q: Memory B cells stand ready to: reproduce rapidly and produce their specific antibody kill viruses…

A: Lymphocytes are the type of leucocytes that play an essential role in immunity.

Q: A drug that inhibits the binding of CTLA-4 to CD86 will help in immunotherapy for malignant melanoma…

A: Lymphocytes are a type of white blood cells that play a major role in immunity. Lymphocytes provide…

Q: Which of the following are similarities between B cells and T cells? S1 = They both recognize…

A: Following are some of the statements regarding B and T cells following of them are correct:-

Q: Which is not a second-line, non-specific defense? inflammation IgA on mucous membranes…

A: Immunology is a branch of biology which deals with the study of immune systems and their responses.…

Q: Which T-lymphocytes activate the B-cell response? suppressor T-cells. cytotoxic T-cells. helper…

A: T cells are most important cells in adaptive immunity.  T helper cells activated by interacting…

Q: Which of the following is not a function of eosinophils? Phagocytosis Antigen presentation…

A: Eosinophils which are also known as the acidophils , are the white blood cells and are one of the…

Q: What types of cells produce antibodies? B cells memory T cells O macrophages

A: The term ‘Immunity’ defines the capability of multicellular animals to fight harmful microbes. This…

Q: During the primary HIV infection, which of the following cells decreases in number?   T-cells…

A: A virus is a submicroscopic infectious agent that reproduces only inside the living cells of a life…

Q: During the inflammatory response, histamine is released by damaged cells which attracts phagocytes…

A: Anergy is a term used in immunology to describe a lack of response by the body's defence mechanisms…

Q: Which is not a second-line body defense? fever inflammation acid mantle of skin natural killer cell…

A: Body's first line of defence is where some physical and chemical barriers are readily available to…

Q: Rapid accumulation of high titers of which the following would suggest that an individual had…

A: ANSWER) The rapid accumulation of high titers of antibodies would suggest that an individual had…

Q: Which of the following is more effective against bacteria than viruses? Type 1 Interferon Type 2…

A: Immunity is a complicated biological system with the ability to recognise and accept what belongs to…

Q: O interferon O is another term for antibodies O complement immunoglobins interleukin

A: When the immune system of the body recognises dangerous compounds, known as antigens, it produces a…

Defense Mechanism

Circumstances influence and compel people to behave in a certain way. One such behavior is a defense mechanism. It is employed by people to escape from unpleasant circumstances, thoughts and actions. Defense mechanisms are, thus, psychological strategies that help to avert and avoid unwanted feelings such as guilt or shame and situations such as threat and danger.