The HIV virus infects and destroys CD4 positive T cells, but otherwise mostly leaves the body intact. CD4 positive I cells are not necessary for an organism to live. Why is an HIV infection deadly if not treated? O Destroying CD4 positive T cells activates the innate immune system, which causes a severe autoimmune reaction. O Erythrocytes (red blood cells) differentiate from CD4 positive T cells. Destroying CD4 positive T cells means a person can no longer make blood. O CD4 positive T cells are important for insulin production. Destroying them means the body can no longer produce this important hormone, and interferes with blood sugar regulation. O Destroying CD4 positive T cells severely compromises the immune system, leaving an individual defenseless against diseases that normally would be contained by the immune system.

Q: An anti-histamine is administered to prevent which cells from causing inflammation? O macrophages O…

A: Our immune system used different cellular, physical and physiological components that provides us a…

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

A:

Q: in your own understanding why is that allergy is dangerous and can be cause of death?

A: Allergy is an exaggerated immune response against a particular foreign substance when entered in the…

Q: T cells can recognize antigens because they Group of answer choices have specific antigen receptors.…

A: Lymphocytes are types of white blood cells. They produced B cells. T cells and natural killer cells…

Q: Which cell(s) are capable of becoming memory cells? Select all that apply. CD4+ T cells B cells CD8+…

A: Lymphocytes are the main cells of immune system of human body. The cells are involved in…

Q: Identify the function of the Purkinje fibres. Select one: O a. O b. O c. O d. act as a pacemaker and…

A: The conducting system of heart consists of SA node, AV node, Right and left AV bundles, purkinje…

Q: After a B-cell antibody binds to its antigen, what happens next? O antigen/antibody complex is…

A: Immunity is a phenomenon that builds up inside the body of organism in order to eradicate foreign…

Q: Vhich of the following is FALSE? O a. The complement system and inflammation are examples of innate…

A: The immune system protects our body from infections through two lines of defense mechanisms;…

Q: Which of the following is NOT a component of the adaptive (specific) immune system?   cytotoxic T…

A: The body's capacity to protect itself from infections and illnesses is known as immunity. It…

Q: Humoral immunity is the part of the adaptive immune system involving: A.cytotoxic T cells killing…

A: The adaptive immune system is also known as acquired or specific immune system. It is a subset of…

Q: Which feature is NOT associated with innate lymphoid cells (ILCS) as compared to adaptive immune…

A: lack t cell receptor (TCR)

Q: You encounter a patient who can't seem to fight off infections that normal patients can. You suspect…

A: Cytokines are tiny proteins secreted by cells that have direct influences on cell communication.…

Q: Which of the following are specific immune responses (select all that apply)? o T lymphocyte…

A: Immunity is defined as the intrinsic ability of the body to fight against infections and diseases.…

Q: Which of the following is TRUE about CD4 cells? Group of answer choices “The CD4 cells directly…

A: CD4 stands for cluster of differentiation 4 and is a glycoprotein. HIV mainly attack these cells to…

Q: cells of the immune system attack "alien" eukaryotic cells. O Antigen O Antibody O Tlymphocyte O B…

A: The immune system of the body is responsible for protecting the body against various substances that…

Q: T-killer cells can target and destroy body cells. What process do they use to do this? A B с D…

A: T-killer cells, also known as cytotoxic T-cells, use a process called cell-mediated cytotoxicity to…

Q: Decreased immunity is a symptom of HIV/AIDS. This is caused by which of the following? Select one:…

A: Acquired immunodeficiency syndrome (AIDS) is a spectrum of life-threatening conditions is caused by…

Q: autoimmune diseases?

A: Autoimmune disease : A disease in which the body's immune system attacks healthy cells.

Q: When T cells attack the insulin- producing islet cells in the pancreas, which of the following…

A: Insulin is a hormone secreted by beta cells of the pancreas in response to high blood sugar…

Q: explain why the natural killer cell in innate immunity don't attack our red blood cells?

A: Natural killer also called as NK cells are a kind of lymphocyte which plays a key role in innate…

Q: B and T lymphocytes are part of the adaptive defense system because th     adapt to their…

A: Immunity is  the ability of an organism to resist disease causing microorganisms or pathogens. There…

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: _______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: Which are most important in helping the adaptive immune system fight cancer MHC class 2 proteins…

A: Adaptive immunity is a type of immune response which occurs in the body after the cells have been…

Q: The immune system relies on defensive white blood cells called antibodies  blood  leukocytes…

A: The blood is the connective tissue which consists of plasma and blood cells. Blood cells consist of…

Q: The "skin test" is diagnostic for tuberculosis. What is the principle behind this test? O…

A: Tuberculosis is a very common disease that is caused due to the infection of bacteria Mycobacterium…

Q: Human immune system     During the inflammatory response, histamine plays a key role in causing…

A: The human immune system is a complex network of cells, tissues, and organs that work together to…

Q: The immune system protects our body from invasion by nonself cells. Explain what could happen if you…

A: The immune system of the body protects the individual from the attack of external pathogens. The…

Q: Which of the following statement is TRUE about effector cells? (Select all that apply)…

A: Effector cells are produced once adaptive immune response is activated because adaptive immune 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: What happens when a helper T cell is activated?

A: An example of an immune cell is the helper T-cell. They are among the major cell types that are…

Q: What would happen if you had no NK cells? What would happen if you had no macrophages?

A: NK cells  are Innate Lymphoid cells from Bone marrow derived lymphocytes. that display cytotoxic…

Q: Why does the Tasmanian devil immune system not fight off the foreign cells that cause Devil Facial…

A: Tasmanian Devil Facial Tumor(TDFT) is a kind of cancer that is transmitted from the infected person…

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: Reed Sternberg cells are derived from which type of normal cell?   T-cells   B-lymphocytes…

A: Immune system is system which helps our body to fight against the foreign substances which will…

Q: Imagine you are the coronavirus living in New York City. You thought the best place to find the most…

A: Coronavirus is defined as a type of common virus that will infect humans, which will typically lead…

Q: The percentage of CD8+ T cell to CD4+ T cells in the white matter of the human brain is - 2:1 5:1…

A: CD8+ , CD4+ is the types of T cell phenotype found in human brain. Especially in white matter of the…

Q: Mr. Conti died from a smallpox infection. The graphs (pictured) illustrate Anne's immune response…

A: Approach to solving the question:Anne's Response to Immunity (Survived):a rise in antibodies that…

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: Which of the following is expressed on B cells and increases their ability to respond to antigen?…

A: B cells are white blood cells that play an important role in the immune response. When they come…

Q: Immune system cells are produced in which of the following? O Thymus O Spleen Liver O Bone marrow

A: We can say that The immune system is one of the systems in our body that helps us to fight against…

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.