which two of following statements are true for an antigen prsent cell such as dendritic cell? a. Phagocytes are extra cellular pathogens  b. Display processed pathoic peptide on the surface of the cell c. Produce antibodies specific for a pathogen d. Activate naive erythrocytes

Q: Explain why each choice (a-d) is correct or incorrect. In clonal selection of B cells, which…

A: B cell expresses receptors ,that are specific to distinct antigen,  is determined before…

Q: Describe the function of both T and B memory cells in the immune response. What type of immunity do…

A: Memory cells are responsible for the adaptive immune system.  Memory T cells: At resting state, it…

Q: John frequently encountered bacterial infections. Tests for immune cells showed the presence of…

A: Complement cascade is the part of innate immunity that consists of lot of proteins acting in a…

Q: Match the appropriate term on the left with the appropriate definition of the right…

A: The immune system protects us from pathogenic infections.

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: What is one way that CD8+- cells are activated? A. by binding to a processed antigen on an MCH II…

A: White blood cells called CD8+ T cells are also referred to as cytotoxic T cells. These cells are…

Q: The following are steps in the cell-mediated inflammatory response. Put them in the correct order.…

A: Cell-mediated immunity is an immune response resulting from the activation of cells of immune-system…

Q: Antibodies can have multiple mechanisms of action. The main mechanism is "flagging" a foreign body…

A: Antibodies are immunoglobulin proteins that are produced by the immune system as a result of the…

Q: An example of innate immune cells are: A. Macrophages B. Dendritic cells C. T cells D. B cells…

A:

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: A patient has contracted an upper respiratory infection caused by a virus. Her initial adaptive…

A: Immunity is the body’s ability to resist and eliminate the potential harmful foreign invaders to…

Q: Write T if the statement is correct; write F if the statement is not correct. P and E selectins are…

A:

Q: You are analyzing the immune response of an ill patient. The patient's serum contains low levels of…

A: Understanding the particular components of the resistant reaction is vital for diagnosing and…

Q: Upon reexposure to a pathogen, a memory B cell can differentiate to which cell type? a. CTL b. naïve…

A: Second line defence or non-specific defence is primarily dependent upon Neutrophils, macrophages and…

Q: The germinal center of a lymph node   a. Is the location of B cells undergoing clonal expansion…

A: Lymph nodes are small, bean-shaped glands that are the part of the lymphatic system. They are…

Q: If you could design a drug that increases extravasation at the endothelium, what is the most likely…

A: The leakage of blood, lymph, or other fluid, such as an anticancer drug, from a blood vessel or tube…

Q: Select all of the pathways that can activate without antibodies.   A. Alternative   B. Lectin…

A: Alternate pathway is a type of complement pathway in which pathogens are Opsonized and killed.…

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: Which event happens first during cytotoxic T-cell activation?

A: INTRODUCTION;-  The activation of cytotoxic T cell is dependent on several simultaneous interactions…

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: Describes the relationship of the following terms using short terms: Adhesion Molecule(s) Anergic T…

A: An antigen is any substance, usually a protein or carbohydrate, that is capable of stimulating an…

Q: The largest and most effective of the phagocytes are:  a. red blood cells b. lymph nodes c.…

A: Question- The largest and most effective of the phagocytes are:  a. red blood cells b. lymph nodes…

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.