1. What causes the nasal symptoms of rhinitis? A. Bacteria B. Histamine C. Leukotrienes D. Prostaglandins

Q: The symptoms in scarlet fever are due toa. streptolysin b. coagulase c. erythrogenic toxin d.…

A: Scarlet fever is a bacterial infection that is characterized by sore throat, fever, swollen lymph…

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: 22. Your patient is born without B cells. He cannot a. fight off intracellular infections b. have a…

A: Here we have to describe if a patient is born without B cells what will happen or what she/he cannot…

Q: 4. A patient presents with fever that spikes every evening and returns to normal in the morning.…

A: The objective of the question is to identify the type of fever that is characterized by a pattern…

Q: 7. Which of the following is more effective against bacteria than viruses? A. Type 1 Interferon B.…

A: Humoral immunity is the component of immunity that is controlled by extracellular fluid-based…

Q: 17. What types of cells can B-lymphocytes differentiate into?   A. Natural killers and phagocytes…

A: The different types of WBC (white blood cells) are responsible for performing specific functions…

Q: 45. Apparently healthy people who may transmit a pathogen they harbor are called a. vectors b.…

A: A pathogen is a disease causing organism. It can spread or infect an individual via various ways or…

Q: 6. In a healthy person, which of the following cells is the most numerous innate immune cells in the…

A: The most numerous and crucial biological component of the innate immune response is the neutrophil,…

Q: Farmer's lung is a hypersensitivity a. a type I hypersensitivity b. a type II hypersensitivity c. a…

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

Q: When the body is exposed to the same virus a second time, the immune response is Accompanied by…

A: Any foreign substances or pathogen can be harmful to an organism. Hence, the organism will develop…

Q: The _____ occurs 6–8 hours after an initial type I allergic response in which mast cells produce…

A: Type I hypersensitivity reaction.

Q: 17. Which of the following are illnesses transmitted by airborne droplet nuclei? (NOTE: there may be…

A: The process by which a disease spreads from one host to another is known as "transmission". Diseases…

Q: 14. Predominant cell types involved in the humoral immune response are: A. eosinophils. В.…

A: Answer No 14 -- Humoral Immunity -- There are two types of immune responses             ( i )…

Q: . An anaphylactoid reaction:     A. is another name for anaphylaxis   B. occurs in patients who…

A: Anaphylactic reactions in the perioperative phase are frequently significant and possibly…

Q: 9. Which of the followings are Eosinophilic functions? I. The movement to inflamed areas II.…

A: The bone marrow acts as the major site for the production and maturation of eosinophils. The period…

Q: 2. B cells proliferate and differentiate into plasma cells and memory cells in the secondary…

A: Introduction :- Differentiated B-lymphocyte white blood cells called plasma cells are able to…

Q: Which ONE of the following flow cytometry results is most likely in a patient with chronic…

A: B cell chronic lymphocytic leukemia (CLL) develops from a type of white blood cell called B cells.…

Q: 13. A diagnosis of AlIDS is made when the helper T cell count is less than 200 cells per mL of…

A: AIDS  Acquired immunodeficiency syndrome or AIDS is a late stage of a viral disease HIV. In AIDS,…

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: The detrimental effects of Lupus erythematosis are initiated by A. activated T cells attacking…

A: Lupus erythematosus: It is an auto-immune disease, in which the human immune system kills its own…

Q: 59. A complication of measles which might lead to personality change is: E. chorea. B. myelitis. C.…

A: Measles is a viral infection which causes respiratory discomfort with other clinical features like…

Q: Which of the following are phagocytes? 1. Neutrophils II. Macrophages III. Natural killer cells

A: Phagocytes are a type of white blood cell that plays an important role in the body's immune system.…

Q: 36. A type III hypersensitivity involves a. B cells, ADCC, complement b. cells releasing…

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

Q: 9. Coronary arteries route oxygen rich blood into the tissues of the heart. They branch off of the:…

A: As per our honor code, we are allowed to answer only one question at a moment. You have posted…

Q: Non-protein antigens are ineffective becase they cant A. Trigger IgM production B. Be used as a…

A: Antigens are any substances with a biological origin and are able to elicit immune reasons by…

Q: Your patient has an anaphylactic reaction (adverse reaction) in his stomach a week (time frame is…

A: Anaphylactic reactions are abrupt, severe, sometimes fatal allergic reactions that affect a large…

Q: 10. Phagocytosis by a phagocyte is required for: B cell action b. helper T (T4) cell action c.…

A: Answer

Q: Which of the following mechanisms can promote tolerance? I. Induction of anergy II. Induction of…

A: Introduction  Tolerance: refers to susceptibility to certain pathogen as well as our own cells,…

Q: 6) Summarize the key difference in the invasion of cells by: а. HIV b. Adenovirus c. Anthrax d.…

A: HIV attacks the immune system by destroying the CD4 helper T cells. Adenovirus enters the cell in a…

Q: 7. Which are important in nonspecific immune defenses? a. interferons b. lymphocyte activation c.…

A: The immune system is an organ system of the body that is functionally responsible for protecting the…

Q: Vhat are antibodies? LA Free floating MHCII B. Free floating TCRS C. Free floating BCRS D. Free…

A: The proteins that bind to the body's foreign invaders are known as antibodies. These protein signal…

Q: phagocytes?

A: Phagocytes: Phagocytes are a type of immune cells which surround and kill microorganisms. They…

Q: Microbial products trigger macrophage activation. Match the receptor with the product that it binds.…

A: Toll like receptors (TLRs) are expressed in innate  immunity cells. For example in macrophages and…

Q: Type I                                                             Type III…

A: 1) Sensitisation is an immunological reaction which occurs when any foreign body (bacteria/virus)…

Q: The contact with allergen that results in symptoms is called thea. sensitizing dose b. degranulation…

A: The concentration of antigen is always an important factor which initiates an immune response. If…

Q: Which of these immunopathologies could be treated with a stem celltransplant?a. arthus reaction b.…

A: Immunopathology: It deals with immune responses associated with the disease. It is a branch of…

Q: Which of the following conditions is not associated with HIV infection?a. Pneumocystis jirovecii…

A: HIV (Human immunodeficiency is a causative agent of sexually transmitted disease (STD) called AIDS…

Q: 12. Which among the following is NOT an autoimmune disorder? a. Rheumatoid arthritis  b.…

A: An autoimmune disorder is a condition in which the body's immune system, which normally protects the…