Which of the following pairs is mismatched? a. plasma cell: mediation of phagocytosis and killing of microorganisms in the plasma b. megakaryocyte: formation of platelets c. dendritic cell: activation of adaptive immune responses d. natural killer cell: develops from a common lymphoid progenitor e. neutrophil: formation of pus f. regulatory T cell: inhibition of T-cell activity.

Q: which of the following is true about the immune system? check all that apply. a. cd8 t cells…

A: Introduction The main function of the immune system is to protect us from foreign substances and…

Q: Which of the following statements about T cells is false? a. Helper T cells release cytokines while…

A: Immunity is the capability of multicellular organisms to resist the attack of harmful…

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

A: Explanation given for the mismatch pair.

Q: For question with blanks, choose the combination of answers that most accurately completes the…

A: Introduction  Our immune system plays key role in defence against harmful foreign particles be it…

Q: Which of the following is NOT true about T cells? A. Natural killer cells (NK) are exclusively…

A:

Q: All of the following have been observed in individuals deficient in either CD3δ or CD3ε except a.…

A: Answer: Introduction: CD3 means a cluster of differentiation is a complex of proteins and T- cell…

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: Which of the following is both a phagocyte and an antigen-presenting cell? a. NK cell b. eosinophil…

A: An Antigen Presenting Cell, like a macrophage, engulfs and digests a foreign bacteria. An antigen by…

Q: Which of the following is not a function of T-helper cells: O A) It recognizes foreign fragments…

A: T cells or T-helper provide help to another cell in the immune response by recognizing foreign…

Q: Using the letters from column B, match the cell description in column A. (Note that all require more…

A: Different immune cells are involved in mediating protection to the host against the pathogen. There…

Q: A number of minor cancerous cells and infected viruses, such as Epstein Barr (EBV), are able to go…

A: Cytotoxic T cells or cytotoxic T lymphocytes are the type of T lymphocytes that plays a role in…

Q: A person who has received a vaccine for human papillomavirus (HPV), which causes genital warts and…

A: Answer: Option: a] Is able to produce antibodies against HPV.       Only a subset of individuals…

Q: Natural killer cellsa. are known for attacking large parasites, such as tapeworms.b. engulf…

A: Natural Killer cells also called large granular lymphocytes are a type of white blood cell. It is a…

Q: .

A: There are two types of the T cells based on the glycoprotein attached , these are CD4 cells and the…

Q: The four characteristics of adaptive immunity include all of the following except a. activation by a…

A: The immune system has a vital role in protecting the body from outside pathogens (bacteria, viruses,…

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: Which of the following is NOT true about T cells?(a) T cells develop from lymphoid stem cells in the…

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

Q: Our first line of defense are barrier __________ that block pathogen entry. Once a pathogen makes…

A: Our first line od defense are barrier Inflammation  that block pathogen entry. Once a pathogen makes…

Q: All of the following are characteristic of regulatory T cells except a. they express CD25 b.…

A: BASIC INFORMATION  IMMUNE SYSTEM  It defends our body from the foreign particles which can cause…

Q: Which of these statements about T lymphocytes is false? a. Saome T cells promote the activity of B…

A: Lymphocytes are types of leukocytes. There are two types lymphocytes in immune system:…

Q: Which statement best describes the difference between responses of effector B cells (plasma cells)…

A: Immunology is a section of biology that includes the study of molecules, cells, and organs that…

Q: Which of the following statements regarding intraepithelial lymphocytes is false? (Select all that…

A: BASIC INFORMATION IMMUNE SYSTEM  It defends our body from the foreign particles which can cause…

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: When an immature dendritic cell becomes an activated dendritic cell, all of the following changes…

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

Q: A drug that were to inhibit the activity of T suppressor cells would lead to _______. a.…

A: Regulatory T cells (Tregs) also known as supressor t cell are a specialized subpopulation of T cells…

Q: in antibody-mediated immunity, what happens immediately after B cells are activated? a. the foreign…

A: The immune system of the body fights against foreign invaders and protect the body from infections.…

Q: Which of the following happens during inflammation? A) O The capillaries supplying blood to the area…

A: Immunity is the body's defense system that protects the body from the invasion of harmful particles…

Q: Which of the following best describes the movement of a T cell through a lymph node? a. It enters…

A: T-cells are part of the cell-mediated immune system in humans. Lymph nodes are small bean-shaped…

Q: Which of the following statements are accurate? T cells, B cells, and Natural killer cells are…

A: According to guidelines we have to answer the first question only. so please kindly post the…

Q: Which of the following explains why dendritic cells, but not macrophages or B cells, contribute to…

A: The immune system provides the body with the ability to prevent diseases or infections in the body.…

Q: What are the roles of the innate immune system? Select all that apply.   A. identity self vs.…

A: Pathogens are disease-causing organisms that can cause humans to become ill or die depending on the…

Q: Adaptive immunity includes both humoral and cell-mediated immune responses, which interact but also…

A: The white blood cells (WBC) in our body are responsible for giving immunological protection.…

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: Which of the following pairs is mismatched? a. T-cell activation: cell division and…

A: T-cells are white blood cells that take part in the cell-mediated immune response. T-cells are part…

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: CD1-restricted α:β T cells respond to lipid antigens of mycobacterial pathogens using all except…

A: Introduction  The cluster of differentiation (also known as cluster of designation or classification…

Q: which of the following cells secrete cytokines that activate B cells, T cells, and macrophages? a. T…

A: The immune cells can be categorized into neutrophils, basophils, eosinophils, monocytes,…

Q: What is the function of cytotoxic T-cells?

A: Acquired immunity develops after birth. It is provided by B and T lymphocytes.

Q: Which of the following describes the developmental pathway for T cells? a. thymus → bone marrow →…

A: A type of leukocyte that plays an important role in the immune system refers to the T cell. T cells,…

Q: All of the following are true in reference to T-cell priming except _____. a. it occurs in primary…

A: The immune system of the human body consists of white blood cells, antibodies, spleen, thymus, and…

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: In a normal individual, a T cell that interacts with a self-antigen in the thymus will more than…

A: Introduction  Immunity is the property or ability of the body to defend against the pathogens.…

Q: What is the single best defining feature of a lymphocyte? A A type of leukocyte B A cell that is…

A: There are two types of lymphocytes-  T Lymphocytes and B Lymphocytes. B Lymphocytes are produced in…

Q: B. INFLAMMATION H. NATURAL KILLER CELLS C. ANTIGENS D. ANTIBODIES I. LYSOZYME J. MACROPHAGE E.…

A: Inflammation is part of the complex biological response of body tissues to harmful stimuli, such as…

Q: Chronic granulomatous disease Select one: A. is caused by a decrease in the number of phagocytes.…

A: Immunodeficiency occurs due to hereditary defects are called primary immunodeficiency and when…

Q: Unlike cytotoxic T lymphocytes, NK cells do not _____. (Select all that apply.) a. secrete…

A: Natural killer (NK) cells are lymphocyte that descend from the very same progenitor as T and B…

Q: How do Eosinophils provide protective immunity against parasites ? A. By secreting antibodies B. By…

A: Eosinophils are multipurpose cells that have a role in innate and adaptive immunity, metabolism, and…

Q: Homing of effector T cells to inflamed tissue is facilitated by the upregulation of _____ on the…

A: Answer : Option (a) VLA -4 Homing of effector T cells to inflamed tissue is facilitated by the…

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.