Which of the following is a critical feature ofimmediate hypersensitivity?a. inflammationb. cytotoxic T cellsc. recruitment of immune cellsd. histamine release

Q: Enumerate 5 lab tests/procedures done to obtain/identify Lymphocytes. Then briefly discuss one

A: Answer

Q: Which statement is true of autoimmunity? a. It involves misshapen antibodies. b. It refers to…

A: Immunity can be defined as the ability of an organism to fight against infections caused by a…

Q: All of the following are functions of antibodies except a. neutralization of pathogen. b.…

A: The antibody has a Y-shaped structure. It is a product of the immune system which detects 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 first cell type active in the innate response is usually a(n)       A) phagocyte.…

A: The innate immune system is the first line of defence in the body.

Q: This graph is illustrating the principle that: Secondary response (d) Primary Response anitbody…

A: Primary immune response is the reaction of immune system when it comes in contact with a pathogen…

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

A: Introduction B lymphocytes, commonly known as B cells, produce antibodies, which are a type of…

Q: Describe how T cells are activated during the development of a specific immune response. e.i. After…

A: Helper T-cells invigorate B-cells to develop antibodies and help executioner ( killer )cells create.…

Q: Structures on invading cells recognized by the adaptive immune system are known as a. antigens.…

A: Immunity is the capability of the body to fight against foreign attack and maintain the persistence…

Q: Which term is used to describe hypersensitivity of the immune system to reLatively harmless…

A: The immune system is made up of special organs, cells and chemicals that fight infection (microbes).…

Q: Which of the following is not a function of antibodies? Select one: a. They neutralize pathogens by…

A: Introduction: The proteins that are produced in response to an antigen are called antibodies. It is…

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: In what process is clonal selection important?a. Complement function c. Inflammationb. B cell…

A: Clonal selection is a process that explains how a single B or T cell that recognizes an antigen…

Q: Explain why each choice (a-d) is correct or incorrect.  A vaccine is effective because  a. The…

A: Vaccine contain weak or inactive parts of particular antigen that triggers an immune response…

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 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: Pus is both a sign of infection and an indicator ofimmune defenses in action. Explain.

A: Pus is thick, opaque, yellowish protein-rich fluid that is filled with dead cells and white blood…

Q: An allergic reaction is an example of:

A: An allergic reaction is an example of:

Q: Antibodies are______ . a. antigen receptors c. proteins b. made only by B cells d.all of the above

A: Antibody  Antibody is the Y shaped molecules that fight with foreign objects or pathogens.

Q: The main effect of staphylococcal protein A is toa) interfere with phagocytosis.b) enhance the…

A: Answer is b.) enhance the attachment of the Fc portion of antibody to phagocytes.

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: ____________ are suspensions of killed or live germs which is employed to induce the production of…

A: Among the given options, option (a) is the most appropriate.It explains that the vaccines are…

Q: Which of the following does not occur during a secondary immuneresponse?a. Antibodies are made…

A: Secondary Immune Response: Secondary Immune Response is one of the important features in which the…

Q: Which of the following is false about HLA class I molecules? A. They are encoded by multiple and…

A: INTRODUCTION HLA Human leukocyte antigen, when a cell is infected with virus or any harmful agent…

Q: The best definition of an antigen is:(a) A foreign molecule in the body(b) A chemical that elicits…

A: In biology, ‘Immunity’ is known as the capability of resisting the progression of harmful…

Q: Contact dermatitis: A. is antibody mediated B. is both a type I hypersensitivity reaction and is…

A:

Q: grafts is mainly caused by

A: Graft rejection is a severe problem in the field of organ transplantation. An immune response is a…

Q: Which of the following is not a function of antibodies? Select one: a. They neutralize pathogens by…

A: The immune system uses antibodies, often referred to as immunoglobulins, to recognize and destroy…

Q: Poison oak and poison ivy, which involve a CD8 cell response, are examples of what type of…

A: Any undesirable reactions that is produced by the usual immune system is known as the…

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: Which of the following cells are primarily targeted by HIV? a. Nerve cells. b. Helper T celIs. c.…

A: HIV targets the immune system. It takes around one to two days to arrive at lymph nodes then these…

Q: Which of the following statements regarding T cells activated by specific antigen is incorrect? a.…

A: Lymphocytes are involved in adaptive immune responses.

Q: Toll-like receptors (TLRS) act to A. cause phagocytic chemotaxis. B. induce phagocytosis. C. bind…

A: The immune system of any living being is important for its living or survival. When the immune…

Q: . Describe the four types of hypersensitivity reaction as to: A. Antibody involved B. Complement…

A: Four types of hypersensitivity are given below :  Type I: reaction mediated by IgE antibodies. Type…

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: Compare and contrast type I and type IV hypersensitivity as to mechanism, symptoms, eliciting…

A: An allergy is the response of the immune system to any foreign substance. This immune response is…

Q: The body's innate defenses include all of the following EXCEPT? A. The skin B. Inflammation C.…

A: Innate defence is a system which is already present in our body from birth .

Q: An individual wit a mutation in their RAG gene in their B cells would still be able to produce which…

A: Introduction:- Type 1 hypersensitivity reaction is immediate immune response. Type 2 is antibody…

Q: Which of the following should be the same inidentical twins?(A) the set of antibodies produced(B)…

A: The term MHC denotes Major Histocompatibility complex molecule. This molecule is the host protein…

Q: Type of specific resistance that has been introduced to the body is already antibodies that provide…

A: A. Natural immunity:- It is a kind of immune response/immunity that the body develops on its own…

Q: Naturally acquired active immunity would be most likely acquired through which of the following…

A: Acquired immunity is an immunity that is acquired during the life on exposure to environment. There…

Q: Explain the difference between basic T cells and B cells as they relate to a vaccine. Additionally,…

A: Lymphocytes are the major components of the human immune system. T cells and B cells are the two…

Q: Compare the cells & moleculesthat produce Humoral Immunitywith those that produce Cell-Mediated…

A: Humoral immunity involved the production of antibodies called the immunoglobulin and is brought…

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.