Which does NOT describe humoral immunity? Group of answer choices a. Antibodies are secreted by T-helper cells b. Humoral immunity is effective against circulating toxins c. Some B cells become memory cells d. cytotoxic t cells can make antibodies

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: Select the correct statement about active and passive immunity.

A: Immunity is the power of the organism that protects against disease-causing microorganisms or…

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: How does HIV (human immunodeficiency virus) lead to AIDS (acquired immune deficiency syndrome)/lead…

A: Human immunodeficiency viruses causes AIDS.This is the condition where gradual failure of immune…

Q: A macrophage phagocytizes an invading E. coli bacterium.  Select the type of MHC molecule that…

A: A macrophage is one of the cells of immune system which plays an important role in innate as well as…

Q: Although a species might be physiologically able to live under a wide range of resource conditions,…

A: Ecology is the study of interaction of an organism with its environment.

Q: Match the cell to its function. Some answers may be used more than once. Some questions may have…

A: The immune system is associated with the body's defence mechanism that functions to resist the entry…

Q: Choose the combination of answers that most accurately completes the statement. In what process is…

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

Q: Question 3 Select one answer. T cells come in several varieties. Cytotoxic T cells are important…

A: T cells come in several varieties. Cytotoxic T cells are important because they can become activated…

Q: A. Kills diseased human cells B. Targets primarily eukaryotic pathogens and viruses C. Stimulates…

A: 1. Neutrophils- They constitute the majority of the white blood cells( 50℅- 70%). In response to…

Q: Select the correct answer from the answers provided. Which of these characteristics is not a major…

A: Some living organisms cannot be visible by the naked eye and only can be seen under the microscope.…

Q: Which of the following is part of your specific immune response? Select one: a. Skin b. "Eating"…

A: Ans- c) B- Cells The immune response in humans is divided into two defensive cooperative systems…

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: Which of the following interactions will NOT provoke an immune response?     A. Endogenous antigen +…

A: Ans - d) Endogenous antigen + MHC Class I + BCR, will not provoke an immune response. The two types…

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: Please answer fast Which of the following is the most effective antihelminthic immune response of…

A: Helminthic infections are one of the leading causes of infections in humans. Nematodes and…

Q: Question: Define time cycled pressure limited ventilation. List the initial ventilator settings used…

A: In accordance with predetermined time cycles along with pressure restrictions, time-cycled…

Q: Which cytokine does not activate NK cells early in a viral infection? a. IFN-a b. IFN-b c. IFN-g d.…

A: Interferon alpha or a is produced due to leukocytes infected with virus. Interferon beta or b…

Q: What does the T-cell receptor on the helper T cell bind? free antigen in soluble form b. antigens…

A:

Q: The acquired ability to prevent an unnecessary or destructive immune reaction to a harmless foreign…

A: Immune tolerance is significant for ordinary physiology. Central tolerance is the fundamental way…

Q: The third line of defense includes: a. inflammation b. stomach’s digestive acid c. phagocytes d. MHC…

A: Answer is d.)  MHC proteins.

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: An example of innate immune cells are: A. Macrophages B. Dendritic cells C. T cells D. B cells…

A:

Q: Cytotoxic T cells express which of the following proteins on their cell surface? (Select all that…

A: T cells or T-lymphocytes are the immune cells. These cells are the type of white blood cells that…

Q: T cells that secrete cytokines that help antibodyresponses are called ________.a. Th1b. Th2c.…

A: T cells are also known as T lymphocytes as they are produced and mature in the thymus. They are an…

Q: Which DOES NOT describe monoclonal antibodies? Group of answer choices a. Monoclonal antibodies are…

A: Monoclonal antibodies are made by using identical immune cells that are all clones of a specific…

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: 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: Match the terms to their most approriate description. Select the INCORRECT match. a. Subunit…

A: Immunology is a branch of biology that studies how immune systems function in all living things. The…

Q: Which of these events is not a part of the second line of defense? You may have more than one…

A: Our body has mainly three line of defence. Defensing foreign substances is important to ensure good…

Q: Your neighbor gets treated with an antibody therapy for an infection (donor antibodies were given to…

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

Q: Upon reexposure to a pathogen, a memory B cell can differentiate to which cell type? a. CTL b. naïve…

A: Second line defence or non-specific defence is primarily dependent upon Neutrophils, macrophages and…

Q: Choose the combination of answers that most accurately completes the statement. Which allergies are…

A: Hypersensitivity reactions are an overreaction of the immune system to an antigen which would not…

Q: Which of the following statements is TRUE? A. Lymphatic vessels and veins have valves B. All…

A: Hi! Since you posted multiple questions, we will be answering the first few for you. If you want the…

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: 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: Protein receptors found on macrophages that recognize foreign antigens a. toll-like receptors…

A: Macrophages are a type of white blood cell that takes part in protecting the body against foreign…

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: Select all of the pathways that can activate without antibodies.   A. Alternative   B. Lectin…

A: Alternate pathway is a type of complement pathway in which pathogens are Opsonized and killed.…

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.