incorrect.  Which statement is true about T cells? a. They usually directly recognize antigens, which then activates a subpopulation of killer cells b. Their proliferation is enhanced by interleukins 1 and 2. c. Once activated, they cannot secrete cytokines. d. They will develop into cytotoxic T cells if antigen is complexed

Q: Which is the proper order of events in cell-mediated immunity? (1) Cloning of cytotoxic T cells and…

A: The objective of the question is to determine the correct sequence of events in cell-mediated…

Q: Sketch a B cell antigen receptor. Label the V and C regions of the light and heavy chains. Label the…

A: Immunoglobulin molecules are the globular proteins that are synthesized by the plasma cells located…

Q: Which of the following cell types is important innonspecific responses to infection?a. natural…

A: The branch of science which deals with components of immune system is called Immunology. Immunity…

Q: Concerning the adaptive immunity, which of the following statements is CORRECT:  a. The adaptive…

A: The adaptive immune response does not occur very rapidly. Unlike the innate immune response, which…

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: What stimulates T-cell lymphocytes to undergo clonal selection?

A: Acquired immunity develops after birth. It is formed by B and T lymphocytes. B lymphocytes provide…

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: Which of the following statements is INCORRECT regarding memory B cells? a. Memory B cells express…

A: B cells are a part of adaptive immune response. B cells have B cell receptors (BCRs) on their…

Q: For each of the following statements, indicate whether the statement is true or false. If false,…

A: a. TrueBooster shots are given because the immune response to an antigen weakens over time. Repeated…

Q: The process of removing auto-reactive b and T cells during maturation is called: a. Clonal…

A: Clonal deletion is the removal through apoptosis of B cells and T cells that has expressed…

Q: complement

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

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: What accounts for the change in a B cell’s ability to bind antigen?

A: B cells are also known as B lymphocytes are special types of blood cells which belong to the group…

Q: Which of the following is a function of cytokines? A. Promote antibody invaders. B. Help T cells…

A: Cytokines : These are small proteins which are crucial in controlling the growth and activity of…

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: 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/are not part of adaptive immunity?a. phagocytic cells e. antigen receptorsb.…

A: Adaptive immunity is a type of immunity that an organism gets after it has been exposed to an…

Q: What is the function of memory T-cells? Select one: a. Pump out chemical weapons and stimulate…

A: Memory T cells are produced by naive T cells that are activated, but never entered with…

Q: Which of the following statements regarding negative selection of B cells is correct? a. Negative…

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

Q: During the adaptive immune response, the role of helper T cells includes _____. Mark all that…

A: The adaptive immune response is the body's defense mechanism that learns and adapts to specific…

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 statements regarding CD4 is incorrect? a. MHC class II molecules present…

A: CD4 could be a monomeric kind I transmembrane compound protein consisting of 4 Ig-like extracellular…

Q: Which is/are involved in reacting to virus-infected cells? If you think more than one are involved,…

A: Many factors contribute to viral immunity. The duration and intensity of the immune response depends…

Q: Explain why each choice (a-d) is correct or incorrect. B lymphocytes are categorized as part of the…

A: The immune system in our body is responsible for protecting us against foreign pathogens. The white…

Q: The T-cell antigen receptor is similar to immunoglobulin molecules in that it: a. can cross the…

A: Antigens are any foreign bodies that enter the human body. The body has an immune system that…

Q: What produces Autoantibodies? Select one: a. Macrophages b. Memory T cells c. Plasma B cells d.…

A: Antibodies (immune proteins) that mistakenly target and react with a person's own tissues or organs…

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: 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: Put a case forward for the importance of antigen specific CD4+ T helper cells, relative to other T…

A: T cells get their name from the fact that they are mostly developed in the thymus. They recognise…

Q: Which of these is a valid example of an antigen and its corresponding epitope? Select one: a. An…

A: Antigen  is any substance that causes body's immune system to produce antibodies against it .

Q: To become a fully activated, antibody-secreting cell, B cells usually need: a. to encounter an…

A:

Q: When endogenous antigens "blend in"( i.e establish a presence on the cell membrane) between the…

A: An antigen is a molecule that stimulates the production of an antibody to generate an immune…

Q: Select all of the following statetments that apply to immunological memory:   A. A small…

A: Immunological memory refers to the immune system's capacity to react to infections more quickly and…

Q: How does IL-2 affect T-cells? Select all the mechanisms in T-cells that utilize IL-2 Select one or…

A: Introduction  Interleukin-2 (IL-2) is a type of cytokine and it acts as a signaling molecule in our…

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: In the secondary response, the IgG levels rise much faster than they did during the first antibody…

A: The secondary immune response:It takes place when a person is re infected and become exposed to the…

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: What is the function of cytotoxic T-cells?

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

Q: Name two antigen-presenting cells.  What is their role in the adaptive immune system? Which classes…

A: In immunology the antigen presenting cells presents the antigen to produce an immunological response…

Q: A naive T cell is migrating from the blood into a lymph node and first rolls along high endothelial…

A: T-lymphocytes are produced from the bone marrow and maturated in the thymus. They express T-cell…

Q: Which of the following is true about antigen presentation, MHC involvement or T cell activation?…

A: Introduction = Major Histocompatibility Complex- Cluster of genes found in all mammalsIts products…

Q: An MHC class II/antigen complex on the surface of an antigen-presenting cell (APC) binds to a T-cell…

A: The objective of the question is to understand the result of the interaction between an MHC class…

Q: Which of the following statements regarding CD1 is correct? a. CD1 binding grooves are very…

A: The CD1 family of proteins is important in the adaptive immune response because they play a role in…

Q: Antibodies against a specific antigen can be injected into a person to provide passive immunity. For…

A: A very strong network of cells, organs, and tissues that guard the body against various infections…