Which of the following plays a role in the Arthus reaction?a. IgE antibodies. b. complement c. cell-associated antigen d. cytotoxic T cells

Q: Identify which of the following immune responses is pivotal to the killing and elimination of…

A: The helminths are a type of parasite that has a worm-like structure. They survive by feeding on the…

Q: Which does NOT describe humoral immunity? Group of answer choices a. Antibodies are secreted by…

A: everyday we are exposed to large number of infectious agent post op however only a few of these…

Q: How does HIV (human immunodeficiency virus) lead to AIDS (acquired immune deficiency syndrome)/lead…

A: Human immunodeficiency viruses causes AIDS.This is the condition where gradual failure of immune…

Q: Which of the following pairs is mismatched? a. activation of memory cells: secondary immune…

A: Explanation given for the mismatch pair.

Q: All of the following are necessary for a specific immune response except: O a. red blood cells O b.…

A: Immune response is the manner in which the body protects itself against substances it considers…

Q: Immunopathology is the study of disease states or immune dysfunctions, which are divided into two…

A: Immunopathology is a discipline of medicine that studies disease-related immunological responses. It…

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: Mark the following statements as true or false. If a statement is false, correct is to make a true…

A: A)  true B) false,  secondary immunue response is controlled by T- cells

Q: Farmer's lung is a hypersensitivity pneumonitis resulting from a. a type I hypersensitivity reaction…

A: The body's defence mechanism against allergens, autoimmunity, and venom is hypersensitivity. Pollen,…

Q: Once Tfh cells have been activated against vaccine delivered intramuscularly which Constant (C)…

A: There are five classes of immunoglobulin or antibodies. All these antibodies have variable and…

Q: Which cytokine does not activate NK cells early in a viral infection? a. IFN-a b. IFN-b c. IFN-g d.…

A: Interferon alpha or a is produced due to leukocytes infected with virus. Interferon beta or b…

Q: The capsule of the infecting microorganism which is composed of polysaccharides can also activate…

A: Introduction  The immune response is a set of mechanisms that the body uses to protect itself from…

Q: Which structure is not functioning properly if an electrical device is needed to stimulate the atria…

A: The heart has an electrical conduction system that consists of a highly constricted and controlled…

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 of the following is NOT true of B ceIls? a. Has membrane-bound antibodies. b. Produces…

A: Answer : d . Kills infected body cells B cells are responsible for secreting Antibodies. T cells are…

Q: A. vagina B. trachea and bronchi C. skin D. stomach E. mouth select A B C D E 1. villi pushing…

A: 1) vagina - low pH , antibodies and secretions  2) trachea and bronchi - villi pushing material…

Q: The region of an antibody that is the antigen binding site is thea. constant region. b. variable…

A: Proteins that are Y-shaped that fight against the body’s foreign invaders are called Antibodies.…

Q: Which pathway of complement activation acts in conjunction with the action of antibodies? А. the…

A: Immunity is defined as the ability of an organism to resist infections by pathogens or it is the…

Q: Which of the following best represents a second line of defense: a. Both A and C b. Fever c.…

A: Defense is the first line of attack against germs and antigens. There are three lines of defense:…

Q: Which of the following binds to the Fc portion of the antibody?     A. C1q   B. C2a   C. C1r…

A: Complement systems is a complex set of soluble molecule that generate a variety of reactions that…

Q: WHAT IF? Suppose an infection in a common sideblotched lizard population killed many more males…

A: Infection is caused by disease causing agents that damage the body tissues of organism and cause…

Q: Which of these events is not a part of the second line of defense? You may have more than one…

A: Our body has mainly three line of defence. Defensing foreign substances is important to ensure good…

Q: Sponges display nonspecific immunity. In an experiment, the cells of two different sponges were…

A: Immunology is the branch of science that deals with the study of the immune system, its mechanisms,…

Q: After a second exposure to a vaccine,   Select one: A.  Antibodies are made slowly and in greater…

A: vaccines are killed or attenuated antigens or antigenic molecules . they are used to prevent…

Q: Indicate whether the following questions are true (T) or false (F). a. Secondary immune responses…

A: When the body encounters an antigen, immune responses are produced. These immune responses can be…

Q: When virus enters into our body, many cells acquire antiviral state due to: a Acquiring resistance…

A: When virus enters our body many cells acquire antiviral state due to INTERFERON PRODUCTION (e)

Q: nstant antigen ndependent antigen ependent antigen

A: Antigen is a molecule which arouses an immune response usually in the form of antibodies in the…

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: 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: Viral antigens appear on the surface of the infected cell in association with which of the following…

A: Answer is d.)MHC-II complex.

Q: Which of the following is NOT a mechanism used by the immune system to fight multicellular…

A: Immunology is a section of biology that studies molecules, cells, and organs that build up the…

Q: Upon further testing, it is found that Matthew in question 4 does have normal cellular immunity.…

A: Antibody

Q: 16. Which cell type assist and interact with both humoral and cell-mediated immunity? A. Macrophages…

A: 16) Helper T cells  along with B cells differentiate into plasma B cells which produces antibodies…

Q: 22. Which of the following is NOT a characteristic of cell- mediated immunity? The cells originate…

A: Note :- Since you have posted multiple questions, we will provide the solution only to the first…

Q: Which of the following is not used as a treatment for autoimmune diseases? Select one: A. Anti-IL2…

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

Q: Which pertains to the immune response of a woman who has just inhaled a coronavirus to which she has…

A: Corona virus are a group of RNA viruses which causes disease in mammals and birds. They usually…

Q: A 41-year-old man has a penetrating injury to his right eye. A month later he has worsening vision…

A: Sympathetic ophthalmia (SO) is a bilateral diffuse granulomatous intraocular inflammation that…

Q: 45. Which of the following would be involved in reacting to a first-time exposure to Mycobacterium…

A: Note:- Sorry, since you have posted multiple questions so we will be solving the first one for you…

Q: A(n) _____ is an inactive form of an enzyme that frequently participates in a cascade of enzymatic…

A: An enzyme is a catalytic molecule that increases the rate of a reaction without getting used up in…

Q: MHCII molecules will bind __________ and locate to the cell surface. a. T-independent type antigens…

A: T cells are not able to recognize free antigens directly. They can recognise only antigens that are…

Q: The following are characteristics of innate immune receptors except A. trigger immediate response…

A: Innate immunity is a nonspecific immune response having physical, physiological, cellular, and…

Q: Why HIV doesn’t naturally induce a strong CD8+ T cell response

A: HIV or the Human Immuno Deficiency Virus attacks the body's ability to fight infectious diseases…

Q: (1) In antibody structure, where are can we find unique variable domains? A. at the tip of each…

A: Introduction :  Antigens are things that cause the immune system to create antibodies in response to…

Q: Which of the following is a type of cytokine? a. mast cell b. lysozyme C c. chemokine O d.…

A: Cytokines are the chemicals produced by the immune cells to protect the non- infected cells.

Q: Cytotoxic T lymphocyte killing of virus infected target cells DIRECTLY depends on which of the…

A: Introduction: Cytotoxic T lymphocytes (CTLs) kill virus-infected target cells through the release of…

Immunology

Immunology is the division of science involved with the immune reactions occurring in living organisms. The organisms are accustomed to evolving internal defense mechanisms to evade the invasion of microbial pathogens. Diverse cells are connected with stimulating the immune responses, which produce inhospitable conditions to the microbes prompting their lysis and thus inhibits the multiplication of the pathogens. The immune system can distinguish the pathogens through the aid of cellular intercommunication and launch responses to destroy them.