Helper T cells do not _________. Select one: a. secrete cytokines that stimulate clonal selection of B cells. b. secrete inflammatory chemicals. c. secrete cytokines that stimulate macrophage activity. d. secrete cytokines that stimulate clonal selection of cytotoxic T cells. e. secrete fever-producing chemicals.

Q: A congenital defect mutates the genes that code for RAG1 & RAG2 making them unreadable (therefore no…

A:

Q: Which of the following characteristics pertains to T cells?a. have specific receptorsb. are of more…

A: T cells (also called T lymphocytes) are one of the major components of the adaptive immune system.…

Q: Match the following cell types with their correct definition. ____ Macrophage a. Granulocyte that…

A: The capability of the body to recognize and fight against foreign and harmful particles is called…

Q: All of the following are examples of how tumors or the microenvironment in which they develop…

A: Tumor cells are able to stimulate specific adaptive immune responses. However, most frequently these…

Q: Which of the following characteristics apply to T lymphocytes?a. mature in bone marrowb. mature in…

A: A lymphocyte is a white blood cell in the immune system of vertebrates. These include natural killer…

Q: _______immunity is provided by B cells and their daughter cells, called_______ , which secrete…

A: The body is exposed to many infectious agents always, so all bodies of organisms have their own…

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: Systemic distribution of TNF-α in the blood circulation may cause _____. a. respiratory burst b.…

A: Tumor Necrosis Factor alpha (TNF alpha), is an inflammatory cytokine produced by…

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: Molecules that label your cells as “self” area. antibodies.b. T-cell receptors.c. major…

A: The immune system of a healthy individual possess an ability to differentiate between the self cells…

Q: Which of the following pairs is mismatched? Select one: O a. lymphocytes: innate immune response b.…

A: The immune system assaults and eliminates, or attempts to destroy, chemicals or germs, like bacteria…

Q: Immune responses tailored to specific antigens involvea. T cells.b. macrophages.c. monocytes.d.…

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

Q: Which of the following links the Innate immune system to the adaptive? a. Cytokines b. APC cells c.…

A: INTRODUCTION Antigen presenting cells This is atype of phagocyte. These cells shows antigens on…

Q: Deficiencies in complement components C1–C4 are associated with _____. a. neutropenia b. chronic…

A: Deficiencies in complement components C1 - C4 are associated with immune - complex disease .…

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: HIV causes immunodeficiency by attackinga. memory B cells. c. plasma cells.b. helper T cells. d.…

A: HIV or Human Immunodeficiency Viruses are types of Lentivirus that infect Humans. Here we will see…

Q: Helper T cells and dendritic cells activate ________  cells. ________  cells activate CD4 cells.…

A: Antibodies are proteins Y-shaped that bind to the foreign invaders of the body and signal to get to…

Q: An important distinction between macrophages that populate the lamina propria of the gut and the…

A: Answer is c.) do not possess signaling receptors needed for production of inflammatory cytokines.

Q: The innate immune response is characterized by itsa. rapid response to invading pathogens.b. ability…

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

Q: An adult who has been thymectomized will have a T-cell repertoire that _____. a. resembles a…

A: The answer is described in the next step:-

Q: Where do naïve cytotoxic T cells encounter foreign antigens and become activated cytotoxic T cells?…

A: Naive t- cells are basically T- lymphocytes that have never been exposed to antigens since their…

Q: Which is/are important in innate immune responses?a. interferonsb. clonal inactivationc. lymphocyte…

A: Innate immunity on non specific immunity includes all the defence elements with which and individual…

Q: may destroy infected cells. Select one: a. Phagocytic cells b. Natural killer T cells C. Cytotoxic T…

A: Pathogens are disease-causing microorganisms that upon entering a healthy body cause a variety of…

Q: Positive selection of lymphocytes refers to the Select one: a. processing of an antigen by a…

A: The question is asking about the process of positive selection in the context of lymphocytes, which…

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: o activate your adaptive defense immune system, you must be:  Select one: a. Exposed to the…

A: The immune system of the kid defends their body from external threats. These include pathogens like…

Q: Antigen-presenting cells cana. take in foreign antigens.b. process antigens.c. use MHC class II…

A: Immunology is the branch of science which deals with the study of the immune system, immune response…

Q: Which of the following can NOT be found in the lymph node? a. Lymph follicle b. White pulp c. Cortex…

A: Lymph nodes contain a large concentration of white blood cells known as lymphocytes, which aid in…

Q: The body's innate defenses against invading pathogens include a. cytotoxic T cells. b. skin and…

A: Immune system  of the body helps us to fight against invading pathogens . They kills or inhibit the…

Q: These two cells destroy an infected cell by releasing chemicals that cause apoptosis. a. NK cell and…

A: A series of certain molecular reactions might cause the death of a biological cell. This phenomenon…

Q: Generally, in healthy individuals and in the absence of infection, a mature naive T cell that…

A: T cells are among the immune system's most essential white blood cells that play a key part in…

Q: Immature B cells can drive strong adaptive immune responses by maturing into _______. Group of…

A: There is some information about B cells ; B cells are at the centre of the adaptive humoral immune…

Q: Inflammatory cytokines a. act as opsonins. Ob. are produced only by phagocytic cells. c. facilitate…

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

Q: Maturelymphocytes are abundant in these organs as they play a central role in adaptive immunity.…

A: Immune system plays a major role in protecting our body from pathogens, harmful environmental…

Q: MHC moleculesa. are glycoproteins.b. attach to the plasma membrane.c. have a variable region that…

A: MHC MOLECULES  ( e ) all of these are correct MHC ( major histocompatibility complex ) molecules are…

Q: Antibody-mediated immunitya. works best against intracellular antigens.b. regulates the activity of…

A: Antibody-mediated immunity: Antibody-mediated immunity is also referred as Humoral immunity which…

Q: 15. cytokines signal B & T cell production 16. macrophage presents antigen to the matching receptor…

A: The immune responses are divided into two types: The humoral immune response and the cellular immune…

Q: Memory T cells _____. (Select all that apply.) a. must all be activated in secondary lymphoid…

A: Memory T cells are antigen-specific T cells that remain long-term after an infection has been…

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

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

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 is TRUE about B cells? A. are lymphocytes B. become mature in the thymus…

A: B lymphocytes: It is named after its site of development n the bone marrow of humans or bursa of…

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.