How may B cells be activated? Select all that apply. Select one or more: a. Crosslinking of BCRS and binding of B-cell co-receptor to C3d. b. Recognition of MHC II and epitope on B-cell with TCR of TFH cell. c. Binding of CR2 to iC3b. d. Binding of B-cell to antigen displayed on FDC.

Q: Which of the following statements about innate lymphoid cells is true? (ONE ANSWER)   Require the…

A: Innate lymphoid cells (ILCs) are immune cells that lack a specific antigen receptor but can produce…

Q: MHC class I molecules present peptide antigens derived from a(n) _______ compartment, whereas MHC…

A: (Major histocompatibility complex). They play vital role in intercellular recognition and…

Q: Write of the following statements is correct?  A. Antigen fragments that bind to MHC class I…

A: Freshly formed proteins that fail to fold or blend properly into the endoplasmic reticulum will be…

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: uch of the following best defines MHC restriction? Select one: a. The TCR recognizes a particular…

A: Concept used -  T cell receptors and MHC restriction    Important definitions-  MHC restriction :…

Q: All of the following apply to allergic responses (Type I Hypersensitivities) EXCEPT: (choose what…

A: Allergic reactions, especially Type I hypersensitivity reactions, are a typical immune system…

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: Determine which statement(s) are true/false NK cells are a type of lymphocyte involved in acquired…

A: Immunity to a disease is achieved through the presence of antibodies to that disease in a person's…

Q: Organize the following steps in order of antibody production. A. CD40L-CD40 interaction turn on…

A: The process of antibody production begins with the activation of a CD4 T cell by a dendritic cell…

Q: Which of the following is NOT a involved in the CD8-T-cell killing of viral-infected cells? Select…

A: In order to understand the role that CD8-T cells play in viral infections, it is important to first…

Q: Why does a sensitized person not experience a skin reaction immediately after exposure to poison…

A: The two main types of T-cells involved are the helper cells and the cytotoxic cells. Helper cells…

Q: Linked recognition is best described as _____. a. the delivery of the co-stimulatory signal by…

A: Humoral immunity involves the activation of lymphocytes (B and T lymphocytes) to provide defence…

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: Pattern recognition receptors bind to Select one: a. B and T lymphocytes b. Host cell-associated…

A: Introduction Pattern Recognition Receptors are; Toll-like receptors (TLR) Nucleotide-binding…

Q: If a B cell receptor does not pass selection, is it better to be self-reactive against a…

A: In the primary lymphoid organs, such as lymph nodes and spleen, the selection is positive and…

Q: All of the following occur after B cells leave the bone marrow except a. peripheral tolerance b.…

A: The lymphoid cell production and maturation follow the transition from primary to secondary lymphoid…

Q: Which of the following statements is TRUE about NK cells? Select an answer and submit. For keyboard…

A: Natural Killer (NK) cells are a type of cytotoxic immune cell that play a role in the rejection of…

Q: Dysfunctional repair of DNA double strand breaks often results in SCID because: thoose all that…

A: SCID stands for severe combined immunodeficiency disease.SCID is caused by adenosine deaminase (ADA)…

Q: A metabolically stressed epithelial cell expresses the protein MICits surface and then interacts…

A: NK cells are activated as an early event during an immune response and does not require the need for…

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: Match the stage of B cell development with the rearrangement or expression of immunoglobulin genes.…

A: B cell development begins in the fetal liver and continues in the bone marrow throughout our lives.…

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: There are different pathways through which B cells can be activated, one of which is CD4 T -…

A: B cells are a type of white blood cell of the lymphocyte subtype. They function in the humoral…

Q: Which of the following statements is the most accurate concerning lymphocytes? a. T cells and B…

A: Lymphocytes are the cells that help to fight the microorganism that cause diseases. In normal human…

Q: Match the term in Column A with its correct description in Column B.

A: Negative selection destroys thymocytes with a great affinity for self-peptides or MHC. This…

Q: During of B cell development, which of the following pairs is incorrect? Select one: a. IL-7: IL-7…

A: B cell development is a process in which B cells mature and differentiate from hematopoietic stem…

Q: During allergic sensitization, which of the following statements are FALSE? A. Allergen exposure…

A: If the foreign substance after entering the body is capable of inducing allergic reaction then the…

Q: Identify which of the following statements regarding peptide–MHC molecule interactions are correct.…

A: The major histocompatibility complex (MHC) is a group of genes that help the immune system recognize…

Q: Identify the incorrect statement regarding NKT cells. (Select all that apply.) a. They express α:β…

A: NK cells play an important role in the innate immune response to primary infection, as well as…

Q: Amino acid variation among MHC class II allotypes that present antigens to CD4 T cells is…

A: MHC or major histocompatibility complex is a set of genes. These genes are responsible for the…

Q: Which of the following is true about MHC? Check all that apply.   A. MHC I is expressed in all…

A: Major Histocompatibility Complex(MHC) is basically a group of genes on DNA.It mainly helps the…

Q: Antigen recognition by T cells in the absence of co-stimulation results in a. upregulation of B7…

A: The system that shields the body from outside intruders, like microorganisms and other infectious…

Q: Complexes of IgG bound to soluble multivalent antigens can activate the classical pathway on the…

A: Introduction :- One of three mechanisms that activate the complement system, a component of the…

Q: The zone of contact between the T cell and a pathogen-infected cell is called a(n) Select one: O a.…

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

Q: Which of the following is false about innate immune receptors? A. They are encoded by intact genes…

A: Innate immunity is the immunity that involves protective barriers. They prevent the entry of foreign…

Q: If a T-cell receptor on a double-positive thymocyte binds to a self-peptide:self-MHC class I complex…

A: The immune system is the shield of the body that protects it from outside intruders, like…

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: Identify the mismatched pair. (Select all that apply.) a. type I hypersensitivity: mast cells,…

A: Different types of hyper sensitivity are the undesirable reactions produced by the normal immune…

Q: Which of the following provides the second signal for T-cell activation? Select one: a.…

A: T cells are generated in the Thymus and are programmed to be specific for one particular foreign…

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: The autoimmune attack on nAChR leads to a decrease in the number of available receptors due to…

A: Answer: Effectors of parasympathetic nervous system Effectors of somatic nervous system…

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: The B-cell co-receptor, composed of CD19/CD21/CD81, is a receptor that binds to complement fragments…

A: A co-receptor is a type of cell surface receptor that functions by binding a signaling molecule in…

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.