First and second line defenses display antigen-specificity. true or false

Q: A secondary exposure to a pathogen for which the body has produced antibodies results in a less…

A: Immune system is a naturally occurring system of organs and antibodies which are produced against…

Q: contrast cytotoxic T cells and NK cells

A: Natural killer cells (NKC) and cytotoxic T cells are two different lineages of immune cells that…

Q: Compare and contrast TH and TC cells with respect to antigen recognition and the response to…

A: T cells are an essential component of the immune system as they target foreign invaders or antigens.…

Q: Classify each item as a first, second, or third line of defense. First Line of Defense Eosinophils…

A: The first line of defence includes physical and chemical barriers that are always ready and prepared…

Q: True or false: The age-related decline in naive T cells affects BOTH the innate and the acquired…

A: Introduction Immune cells emerge from bone marrow stem cells to become several types of white blood…

Q: Breast feeding provides which of the following to an infant?a) Artificial active immunityb)…

A: Immunity may be defined as an ability of the body to fight infections.  Immunity may be two types…

Q: The adaptive immune defenses respond to which of the following?a. specific antigensb. general…

A: Answer is a.)  specific antigens.

Q: Which antibody class is the first produced during a primary response?

A: Answer: Introduction: Antibody is also known as immunoglobulin, a protein formed by the immune…

Q: Pus is both a sign of infection and an indicator ofimmune defenses in action. Explain.

A: Pus is thick, opaque, yellowish protein-rich fluid that is filled with dead cells and white blood…

Q: ___________ shock occurs as a result of exposure to an antigen to which one is hypersensitive.

A: Hypersensitivity refers to the intolerance of our body towards specific agents which leads to a…

Q: Two students are studying for an exam on the body’s defense systems. One of them insists that…

A: A complex network of cells, tissues, and organs that work collectively to protect the body and fight…

Q: Injury to the spleen can lead to its removal. What impact would this have on host defenses?

A: BASIC INFORMATION  SPLEEN  It is present in the abdomen in the upper left side  this organ helps in…

Q: Which of the following is not characteristic of a response to a previously encountered pathogen?…

A: The first exposure of an individual to a pathogen result in a primary immune response. When a second…

Q: Contrast the primary and secondary response to antigens.

A: The immune system provides defence against invading pathogens. It is a complex network of cells,…

Q: Which of the following is NOT part of the body's third line of defense? Antibodies O Cytotoxic…

A: To combat foreign invaders such as viruses, bacteria, and fungi, the human body does have three…

Q: Which cell type would likely be the first to attack a tumor even though it does not have specific…

A: To identify Which cell type would likely be the first to attack a tumor even though it does not have…

Q: Why is the secondary response to an antigen so much faster than the primary response?

A: The secondary immunologic response is that the reaction of the immune system once it contacts a…

Q: When referring to immunity, what does the term innate imply? the mechanism will develop based upon…

A: Innate immunity is the dominant form of the immune system found in multicellular organisms.

Q: Draw a graph showing antibody response on primary and secondary exposure to an antigen.

A: The immune response is the body's reaction to a foreign particle that activates an individual's…

Q: All lymphatic organs/tissues that are scanning for pathogens contain circular areas of lymphocyte…

A: The lymphatic system is constituent of the immune system and circulatory system. It is formed by a…

Q: All antigen are not immunogen but all immunogen  are antigen- please Briefly explain

A: Answer- Antigens are any foreign substance that can evoke an immunological response after the…

Q: _____antibodies are predominant in primary immune response, while _____________ antibodies are…

A: Immunity is defined as the ability of an organism to prevent the entry of harmful microbes in the…

Q: Illustrate the B-cell maturation process in response to antigen triggering

A: B cell  also known as B lymphocytes are type of immune cells that belongs to the subtype of B…

Q: Antibodies are able to dispose of antigens in which of the following ways? O Neutralization…

A: Antibodies or Immunoglobulins are substances produced by the immune system, in response to a foreign…

Q: TRUE OR FALSE  Each B lymphocyte in your body has receptors on its surface, membrane bound…

A: These are a type of white blood cell , and function in the humoral immunity component of the…

Q: Discriminate between humoral and cell-mediated immunity in a table .

A: Immunity is the body's defense system that fights against pathogens and provides protection against…

Q: What role do all antigen-presenting cells (APCs) play? Group of answer choices phagocytosis of…

A: ADAPTIVE IMMUNITY- This has the capability of recognizing and selectively eliminates the specific…

Q: Place the following events in the correct sequence. Drag the text blocks below Into their correct…

A: To place the events in correct sequence

Q: An individual is infected with a particular pathogen that he had before. This results in the…

A: Immune response is meant by the response body shows when any pathogen or offending agent invades  or…

Q: Define the term: antibody

A: The defense system in our body is known as the immune system, it helps our body to fight against the…

Q: The complement system of defense is composed of proteins that are always present in the blood. Which…

A: The complement system is the part of the immune system that enhances the ability of antibodies and…

Q: What is the difference between non-specific and specific defenses? Contrast the two methods of…

A: The Immune system is responsible for protection from evading and foreign substances. This protection…

Q: Innate immunity involves all of the following except: Inflammation Antibodies Phagocytosis Fever

A: Innate immunity is non specific type of defence that is present at the time of birth. This is…

Q: The redness and swelling associated with an inflammatory response is caused by * secretion of…

A: Immune system deals with the handling of antigens which enter in our body.

Q: Define antigen presentation.

A: A molecule or chemical structure that can attach to a specific antibody or T-cell receptor is…

Q: Contrast the general functions of the different antibody classes.

A: Antibody also known as immunoglobulins are Y shaped molecules that forms the major part of the…

Q: Discuss the difference between the primary response and the secondary response to antigen exposure.

A: The immune system's ability to recognise and respond to previously encountered antigens is referred…

Q: Describe the actions of an antigen-presenting cell.

A: Antigens are foreign elements that stimulate the production of antibodies by activation of the…

Q: Why is antigen-presentation important in fighting infection?

A: Antigen presentation is the process by which protein antigen is ingested by an antigen-presenting…

Q: True/False: Unlike innate immune responses, adaptive immune responses are initiated in secondary…

A: Immune system is a very important system which plays an important role in eliminating foreign…

Q: match the following with their partners: herd immunity the faster and more robust immunity that…

A: Immunology refers to the atidy if immune system of the body.

Q: A A person has a disease that has activated the first line of defense. Which of the following…

A: Introduction:-  The innate immune system is a collection of nonspecific defenses found in the human…

Q: Which of the following is NOT part of the body's third line of defense? Cytotoxic T-lymphocytes…

A: Introduction Basically, 3 types of line of defense are found in our body :-  Physical and Chemical…

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.