Which of the following characteristics pertains to T cells?a. have specific receptorsb. are of more than one typec. are responsible for cell-mediated immunityd. stimulate antibody production by B cellse. All of these are correct.

Q: Which of the following cell types is important innonspecific responses to infection?a. natural…

A: The branch of science which deals with components of immune system is called Immunology. Immunity…

Q: Explain why each choice (a-d) is correct or incorrect. In clonal selection of B cells, which…

A: B cell expresses receptors ,that are specific to distinct antigen,  is determined before…

Q: Describe three ways in which B cells and T cells are similar and at least fi ve major ways in which…

A: The immune system of the body protects the individual from the attack of external pathogens. The…

Q: Which of the following plays a role in the Arthus reaction?a. IgE antibodies. b. complement c.…

A: Arthus reaction is a type III hypersensitivity reaction in which antigen-antibody complexes are…

Q: The humoral immune response depends on which cells? a. TC cells b. B cells c. B and TH cells d. TC…

A: BASIC INFORMATION  IMMUNE SYSTEM  It defends our body from the foreign particles which can cause…

Q: Compare and contrast the activities of B cells versus T cells.

A: Introduction: The immune system is involved in protecting the human body from any invading pathogen.…

Q: For question with blanks, choose the combination of answers that most accurately completes the…

A: Introduction  Our immune system plays key role in defence against harmful foreign particles be it…

Q: Which one of the following acts as the “alarm signal” to activate the body’s adaptive immune system…

A: BASIC INFORMATION IMMUNE SYSTEM  It defends our body from the foreign particles which can cause…

Q: Which type of cell actually secretes antibodies?a. T cell b. macrophage c. plasma cell d. monocyte

A: B-cells, also said to be B lymphocytes, are a type of white blood cells that play a crucial role in…

Q: Which of the following is NOT true about T cells? A. Natural killer cells (NK) are exclusively…

A:

Q: Which of the following is a critical feature ofimmediate hypersensitivity?a. inflammationb.…

A: Immediate hypersensitivity or type I hypersensitivity response is the binding of allergen-specific…

Q: Which of these statements about the Fab portion of antibodies is true? a.It binds to antigens. b.Its…

A: Immunology deals with the immune system that gives protection to the body from the harmful…

Q: How could you distinguish the type of T cell that is active in an immune response? In other words…

A: Macrophages are the first cell types to respond to infection. If a macrophage encounters a foreign…

Q: Which of the following is not a function of T-helper cells: O A) It recognizes foreign fragments…

A: T cells or T-helper provide help to another cell in the immune response by recognizing foreign…

Q: Which of the following is NOT true of Innate Lymphoid Cells (ILCs)? A) Each ILC type responds to a…

A: Innate lymphoid cells are immune cells that mirror the phenotype and function of T cells. It…

Q: Which of the following true of active immunity? Is considered to provide short term protection O…

A: The immune system protects the body from the external attack of a pathogen or foreign body. Active…

Q: Cytotoxic T cells express which of the following proteins on their cell surface? (Select all that…

A: T cells or T-lymphocytes are the immune cells. These cells are the type of white blood cells that…

Q: Which is not a direct consequence of an antibody:antigen interaction? A) O clump or agglutinate…

A: Option E is the answer.  All the above are consequences of an antibody: antigen interaction.

Q: Which of the following immune cells/molecules are most ef-fective at destroying intracellular…

A: Answer is c.)  TC cells.

Q: Molecules that label your cells as “self” area. antibodies.b. T-cell receptors.c. major…

A: The immune system of a healthy individual possess an ability to differentiate between the self cells…

Q: is a mechanism of self-tolerance in which the lymphocyte will not achieve a full activation due to…

A: Lymphocyte is a kind of white blood cells present in immune system of jawed vertebrates.Lymphocytes…

Q: When a helper T cell releases interleukin-1 to stimulate other leukocytes during antigen…

A: The cells communicate through the mode of biochemical exchange. It is studied under the domain of…

Q: Which of the following is NOT true about T cells?(a) T cells develop from lymphoid stem cells in the…

A: A defense system in the body of an individual which constitutes a complex network of cells and…

Q: T cells that secrete cytokines that help antibodyresponses are called ________.a. Th1b. Th2c.…

A: T cells are also known as T lymphocytes as they are produced and mature in the thymus. They are an…

Q: An allergic reaction is an example of:

A: An allergic reaction is an example of:

Q: Put the following steps in order for cell-mediated immunereactions:(a) Differentiated T cells…

A: Cell-mediated immune response can be defined as the immune response generated by the cells such as…

Q: Describe three ways in which B cells and T cells are similar and atleast five major ways in which…

A: Lymphocytes belong to the category of white blood cells and serve the function of immunity.  As its…

Q: Upon reexposure to a pathogen, a memory B cell can differentiate to which cell type? a. CTL b. naïve…

A: Second line defence or non-specific defence is primarily dependent upon Neutrophils, macrophages and…

Q: What types of cells could be involved in specific immune reactionsagainst the rabies virus?a. T…

A: Viruses are microscopic parasites, typically much smaller than bacteria. They lack the ability to…

Q: Which of the following does not pertain to B cells?a. have passed through the thymusb. have specific…

A: Immune system comprises innate and acquired immunity. Innate immunity consists of a physical barrier…

Q: To become a fully activated, antibody-secreting cell, B cells usually need: a. to encounter an…

A:

Q: The body's innate defenses against invading pathogens include a. cytotoxic T cells. b. skin and…

A: Immune system  of the body helps us to fight against invading pathogens . They kills or inhibit the…

Q: How is the cytotoxic T cell mechanism of action similar to that of complement? A. Cytotoxic T cells…

A: To neutralize antigen three possible ways are there: - Phagocytosis - ADCC (Antibody-dependent…

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: In humans, B cells mature in the and T cells mature in the.a. GALT, liver b. bursa, thymus c. bone…

A: White blood cells (WBCs) play an important role in defending the body against antigens, like…

Q: List 3 things that helper T cells do:

A: Thymus is the site where T-lymphocytes get mature. T-lymphocytes arises in bone marrow. when t-cells…

Q: Which cells of the immune system secrete antibodies? A. Natural killer cells only B. T cells only C.…

A: The immune system helps prevent the entry of foreign substances into the body. The immune system…

Q: When a lymphocyte is responsive to an antigen O it will undergo clonal expansion O it will undergo…

A: Introduction In the immune system of jawed vertebrates, a lymphocyte is a type of white blood cell.…

Q: Select the type of T cell that plays a role in diminshing an immune response:

A: T cell or T lymphocyte, is a vital component of the immune system. When it comes to protecting the…

Q: Which of the following cell types is unable to interact with naive T cells and induce their…

A: Those cells of the immune system that target specific antigens are T cells. The origin of these…

Q: D a Which of the following is considered an innate immunity: ● Production of antibodies via B…

A: Immunity is defined as a complex biological system with the ability to recognise and tolerate what…

Q: Which of the following is a component of humoral immunity? O Na Natural Killer cells B lymphocytes…

A: Immunity is the body's ability to protect itself from foreign cells that enter the body and can be…

Q: Which type of immune response is most directlyeffective against bacteria?a. natural killer cellsb.…

A: The immune response can be defined as the reaction that occurs within an organism for the purpose of…

Q: Which statement is incorrect? a. IgG is the most abundant antibody in blood b. Antibodies can exist…

A: Only Option C is incorrect  Because, Immunoglobulin M (IgM): Found fundamentally in blood and lymph…

Q: T cells that react with self antigens are destroyed through: A. cytokinesis b. macrophages c.…

A: The T cells are one of two lymphocytes and play an important role in the immune system. B-cells are…

Q: If you come down with the flu, your body will launch an immune attack against the flu virus. During…

A: A virus-bound antibody binds to receptors, called Fc receptors, on the surface of phagocytic cells…

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.