All of the following are involved in the alternative pathway of complement activation except _____. a. factor B b. factor D c. factor P (properdin) d. C4 e. C5.

Q: Complement can enhance phadocytosis because of the presence on macrophages and neutrophils of…

A: The correct option is C3b.

Q: Which of these statements about complement proteins C3a and C5a is false?a. They are released during…

A: Complement is a group of plasma proteins that can get activated directly by pathogens or indirectly…

Q: Which of the following is not a consequence of activation of the complement system? Select one: a.…

A: The immune system of the body can help in preventing various diseases as well as in repairing any…

Q: Which of the following is not an example of a complement control protein? a. decay-accelerating…

A: Complement system- complement system refers to a series of more than 20 proteins circulating in…

Q: The following events occur in humoral immunity, leading to an activated B cell in a T dependent…

A: Humoral immunity is a crucial component of the immune system that involves the production of…

Q: complement

A: Option D is answer .    The presentation of the antigens to the T helper cells for their activation…

Q: The major inflammatory mediator released by degranulating mast cells in type I hypersensitivity is…

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

Q: Which pathway(s) of complement initiation/activation would you expect to occur earlier in response…

A: Introduction  The immune response is the process by which the body recognizes and defends itself…

Q: Deficiencies in complement components C1–C4 are associated with _____. a. neutropenia b. chronic…

A: Deficiencies in complement components C1 - C4 are associated with immune - complex disease .…

Q: All of the following are true of some or all complement proteins except _____. a. they are soluble…

A: The complement system is part of the immune system which involves specialized proteins that aid the…

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: All but one of the following occurs during the inflammatory response.  Select the example below that…

A: c. Vasoconstriction prevents excessive blood loss due to injury. It is the correct option.…

Q: The primary role of complement control proteins that operate in the early stages of complement…

A: In response to antigenic stimulation, antibodies are produced which are immunoglobulins. The…

Q: In what process is tumor necrosis factor (TNF) not involved?a. chemotaxis of phagocytesb. fever c.…

A: Tumor necrosis factor (TNF) is produced by macrophages, lymphocytes, and other immune cells as an…

Q: Which of the following does not accurately describe complement components?   A. made by the spleen…

A: The complement system is the major effectors of the humoral branch of immune system; this is the…

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: A young child is hospitalized with recurring bacterial infections, although she appears to make…

A: Humoral immune deficiencies are the conditions which are caused by the impairment of humoral…

Q: Which of the following leads to swelling seen in an inflammation? a. Vasodilation  b. Complement…

A: Swelling is the result of the increased movement of fluid and white blood cells into the injured…

Q: Which of the following is NOT true regarding the alternative complement pathway? It can be triggered…

A: There are three types of complement pathways: Classical pathway Alternative pathway Lectin pathway

Q: The cytolytic action of the complement system is most similar to the action ofa. interleukin-1.b.…

A: Complement system- It is a cascade system, plays a role in immune system by enhancing the antibodies…

Q: Explain why each choice (a-d) is correct or incorrect. Allergens differ from antigens because a.…

A: Allergns are the substances which are responsible for causing the allergy to the host.

Q: Enhanced phagocytosis of a cell by the binding of aspecific protein is called ________.a.…

A: Phagocytosis is the process by which a cell engulfs substance and degrades these using enzymes into…

Q: Which of the following participates in an immediate rather than an induced innate immune response to…

A: Innate immunity is a nonspecific antigen defense mechanism. A host activates this mechanism…

Q: Mobilization of neutrophils to fight infection in tissue is mediated by all except which a. TNF-a…

A: The immune system is a control network of organs and immune cells that detect and kill foreign…

Q: The photomicrograph shows a section of synovium from the knee joint of a patient with rheumatoid…

A: The question is asking us to identify the most abundant cells in the inflammatory infiltrate of a…

Q: Any aspect of the immune system can be deficient.  Which of the following deficiencies would…

A: Introduction Immunity: it is the capability of our body to fight against the diseases. This is done…

Q: Frequently, several different signals or molecules are needed in order to produce an immune response…

A: The question is asking about the second signal required for the activation of B cells or T cells in…

Q: The followings are functions of antibody eliminating unknown particles or cells which enter into the…

A: An antibody is also known by the name of immunoglobulin. It is a large Y shaped protein that is…

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.