The first exposure of a person to an allergen results in the production of the IgE class of immut surfaces of mast cells and release of which of the following? O A) Calcium O B) Interferon-a and interferon-B O C) Interleukin-6 (IL 6) O D) Leukotriene O E) Substance P.

Q: APC cells with antigen presented on MHCI can trigger which naïve cell type to activate, thus forming…

A: All nucleated cells express MHC class I molecules. MHC class I molecules are formed in the…

Q: Select all of the following that are functions performed by different antibodies. ( select all the…

A: Antibodies are also known as immunoglobulin (Ig) which are heavy globular proteins. They are…

Q: 1) Which line of defense are these immune response components part of? A) Complement: B)…

A: Immune system helps in protection of organism against disease.Immune system helps in detection and…

Q: The development of which of the following cells is closely related to reticulocytes? A) monocyte B)…

A: Erythropoiesis is a complex and heavily monitored process that begins with an erythroblast in the…

Q: 7. Which cell type is primarily responsible for HIV's transport to the brain? A) T cells B)…

A: HIV, or the human immunodeficiency virus, is a virus that targets CD4 cells, a subset of T cells,…

Q: 16. Which cell type is derived from myeloid progenitors? A). Tc cell B). TH cell C). B cell D). Mast…

A: The development of blood cells starts with stem cells, which are unspecialized cells that can give…

Q: DiGeorge syndrome is the result of the absence or immaturity of the thymus gland at birth. This…

A: The immune system of the body consists of immune cells which is responsible for removing the foreign…

Q: The grouping of blood is based on substances called: A) antibodies B) antigens C) antitoxin D)…

A: Amswer is b.) Antigen.

Q: čéllš attáčk virally infected cells, usually killing them using what method? O 1) Complement…

A: Adaptive immunity is an immunity that happens following disclosure to an antigen either from a…

Q: What type of cells secrete antibodies? A) Cytotoxic T cells B) Helper T cells C) B cells…

A: Antibodies are  glycosylated protein molecules, also known as immunoglobulin. Antibodies are antigen…

Q: How does the thymus help the body avoid autoimmune responses? (A) By negatively selecting T cells…

A: The immune system is a complicated network of cells, tissues, and organs that work together to…

Q: What term describes microbial molecules of pathogens such as peptidoglycan and LPS that can trigger…

A: Innate immunity is an in- born immunity what Ch gives protection against the invading pathogen or…

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: What does the highlighted structure do? A) develop T cells B) develop eosinophils C) develop B cells…

A: Leukocytes and erythrocytes originate from hematopoietic stem cells. B cells, T cells, eosinophils…

Q: Interferons are considered as ______ signals IL-2 is considered as ________ signals IL-1 is…

A: Signaling molecules are small molecules, ions, or even gas that can either cross the lipid bilayer…

Q: Which of the following is one of the family of immunoglobin like proteins that mediate Ca+2?a)…

A: Cell surface adhesion molecules are primarily involved in the transmission of information from…

Q: Which statement is incorrect regarding Type IV Hypersensitivity? O A) T-helper cells are activated…

A: Contact dermatitis takes place when the skin comes in contact with an allergen directly. It results…

Q: An allergic reaction is an example of:

A: An allergic reaction is an example of:

Q: Which one is not non-specific immune response?  a) antibady, b) phagocytosis, c) interferons, d)…

A: Pathogen or foreign particles are disease causing agents which when enter inside the body and cause…

Q: Which event happens last in a humoral immune response? 1) CD4 T cell activation 2) presentation of…

A: The correct option is (d) the production of antibodies.

Q: All of the following cells directly incorporate antigens into their structures, EXCEPT: A). Antigen…

A: The immune system is a defensive system in a host consisting of widely distributed cells, tissues,…

Q: Both antibodies and particular complement proteins, such as c3b, are capable of aiding phagocytes in…

A: Bacteria are a kind of organic cell. They comprise a huge space of prokaryotic microorganisms.…

Q: Which is an example of passive immunity? A) only a fetus acquiring antibodies through the placenta…

A: Passive immunity can be defined as the transfer of active humoral immunity of antibodies. It can…

Q: The brain can sense cytokines released by peripheral immune cells through the following means EXCEPT…

A: Cytokines are small proteins produced by cells of the immune system in response to infection,…

Q: 20) Which of the following is associated with passive immunity? A) exposure to an antigen B) passage…

A: Immune system is the body's defense mechanism against infection causing foreign organisms or germs…

Q: Which of the following is not a characteristic of memory B cells a.) Secretion of a large amount of…

A: Memory B cells are a type of long-lived immune cell that develop after an initial exposure to an…

Q: Delayed-type hypersensitivity reactions in the skina) are characterized by a wheal and flare…

A: An individual exhibits the potential to withstand a particular toxin or infection called immunity.…

Q: Natural killer cells target: A) O cells that possess abundant MHC I self antigens on their surface

A: The natural killer cell is an important cell of an innate immune system. They are larger granular…

Q: Superantigensa) are exceptionally large antigen molecules.b) cause a very large antibody response.c)…

A: Super antigens can activate up to 20% of the body's total T-cells concentration.

Q: What statements are correct about the innate immune system?

A: Immunity is the ability of organisms to cease a certain type of infection or toxin with the help of…

Q: Which of the following is not a function of interleukin 1?  a.) triggering the production and…

A: Interleukins are a type of cytokine that were originally thought to be produced only by white blood…

Q: A table comparing the biological characteristics of the five classes of immunoglobulins is shown…

A: Immunoglobulins are also called as antibodies which are made by white blood cell (WBC)

Q: Granzyme and perforin are used by what cell type in the immune system to carry out its function? O…

A: Immune system of the body contains several types of cells that are involved in cellular function…

Q: ic T cells can kill virus-infected cells. ic T cells respond to antigen bound to MHC class I…

A: T lymphocytes are a type of lymphocyte. T cells are one of the immune system's most important white…

Q: Which is not applicable to innate immunity? A) O It is faster than adaptive immunity in responding…

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

Q: Which of the following determine what specific antigens B cells can recognize and bind? a) The type…

A: The immune cells are the defense cells that protect the body from invaders. The cells of the immune…

Q: What is the one cell type that does the most to coordinate and control the adaptive immune response?

A: The immune system's adaptive immune system, sometimes referred to as the acquired immune system, is…

Q: The classic clinical problem with immunodeficiency disorders is the development of which of the…

A: Immunodeficiency disorders are common and it occurs due to many conditions. The ability of the body…

Q: A flu-infected cell has down-regulated its MHC class I expression. The lymphocytes below comes to…

A: MHC class I molecules: These are cell surface recognition elements. These are expressed on virtually…

Q: 9. Which is NOT a component of lymph fluid? A) CO2 B) Dead blood cells C) Pathogens D) Dissolved…

A: Introduction  In order to purify and filter lymph, the lymphatic system is a system. The lymphatic…

Q: Immunoglobins help eliminate the pathogen through the process of:

A: Option C . Direct Phagocytosis .

Q: 12. Which antibodies will be found in the serum of a person with blood type A, Rh+? a) anti A, anti…

A: Anti-B antibodies are present in the serum because the individual has type A blood and does not have…

Q: What kind of cell carries an IgM antibody? a)Mast cell b) B cells c)Helper T cell d) Killer T cell

A: Hi! Thank you for the question. As you have posted multiple questions, I will be answering the first…