2. The following is false about the junctional diversity of antibodies?A. insertion of none-coded nucleotides to the endsB. Insertion of pallindromic nucleotides to both endsC. TdT adds or remove nucleotides at the exposed ends of the V, D or J genesD. occurs exclusively in all lymphocytes including NK cells3. The following is false about somatic hypermutation?A Are not transmitted to offspringB occurs in all T cellsC occurs only within germinal centersD Activation-induced cytidine deaminase plays an important roleE occurs in variable regions CDR hotspots of Ig genes H and L chains

V(D)J recombination is the type of somatic recombination in immune cells like lymphocytes. This is…

2. The following is false about the junctional diversity of antibodies? A. insertion of none-coded nucleotides to the ends B. Insertion of pallindromic nucleotides to both ends C. TdT adds or remove nucleotides at the exposed ends of the V, D or J genes D. occurs exclusively in all lymphocytes including NK cells

2. The following is false about the junctional diversity of antibodies? A. insertion of none-coded nucleotides to the ends B. Insertion of pallindromic nucleotides to both ends C. TdT adds or remove nucleotides at the exposed ends of the V, D or J genes D. occurs exclusively in all lymphocytes including NK cells

Biology (MindTap Course List)

11th Edition

ISBN:9781337392938

Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Publisher:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Chapter45: The Immune System: Internal Defense

Section: Chapter Questions

Problem 10TYU: Which sequence most accurately describes antibody-mediated immunity? 1. B cell divides and gives...

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4. The function of allelic exclusion is? a. increase the magnitude of antibodies b. increase the affinity of antibodies c. increase the specificity of antibodies d. increase the diversity of antibodies e. increase sensitivity of antibodies
1. "Which of the following statements is/are true? The only region in the body where a virus‐infected cell can interact with T cells is in the lymph nodes.Virion surface proteins tend to elicit a stronger immune response during the course of natural infection than do internal components of the virion.Epitope‐containing antigens must be digested to single amino acids and reassembled at the surface in the presence of histocompatibility antigens in order to provoke immunity. 2. Why are soluble antibodies (the products of the humoral response) good antiviral agents? 3. What are the roles of the following cells in the vertebrate immune response? B cellsHelper T cells (CD4+)Cytotoxic T cells (CD8+)"
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1.The passing of antibodies into newborn babies by their mothers is known as: A) active immunity B) passive immunity C) primary immune response D) antigens The immune system responds to the antigens found on invading microorganisms by: A) producing antibodies B) antibodies preventing the microbe from causing infection C) marking the microbe so that it can be attacked by white blood cells D) all the above
1. Which of the following is true about the clonal selection theory? Select one: a. An antigen selects certain B cells to produce a clone of plasma cells b. An antibody stimulates the multiplication of B cell antigens against it c. T cells select those B cells that should produce antibodies regardless of antigens d. T cells suppress all those B cells except the ones that should divide and multiply e. An antibody selects certain B cells to produce a clone of plasma cells 2. All of the following are functions of the lymphatic system except it does not _(blank) _. Select one: a. Absorb excess fluid and return it to the bloodstream b. Absorb fats c. Produce lymphocytes d. Defend the body against pathogens e. Transport gases throughout the body 3. When a macrophage engulfs a pathogen, a piece of the pathogen is then presented on the macrophage's surface in the _ (blank) _ protein. Select one: a. Self-antigen complex b. Immunoglobulin complex c. Histamine complex d. Cell-mediated…
1. Which of the following statements about CD4+ Th17 cells are true? i. Cannot form T effector memory (TEM) T cell populations ii. Require the master transcription factor RORgammaT for their development iii. Produce effector cytokines IL-17 and IL-22 which help recruit neutrophils and stimulate antimicrobial peptide production iv. Do not require the transcription factor NFAT for IL-2 production downstream of TCR activation v. Important for defense against intracellular bacterial infection only a. i and iii b. ii and v c. ii and iii d. ii, iii, iv e. i, ii, and iv
1. The fact that the immune system has such great flexibility that it is able to produce such a large pool of antibody proteins in which at lease on in that pool would be able to recognize any unique antigen to which you might be exposed is because Select one: a. the light and heavy chain amino acid sequences vary widely within an antibody class b. antibody proteins contain multiple antigen binding sites c. the hyper-variable heavy chain sequence leads to wide antigen recognition d. the amino acid sequences of the antigen binding site varies tremendously between different antibody molecules e. an antibody protein can bind many different types of antigens Clear my choice 2. Activation of any of the Complement Cascades in response to a bacterial infection occurs rapidly because Select one: A. activation of all the pathways leads to a fast response B. bacteria are easily and quickly recognized by the initiating Complement pathway enzymes. C. the first protein in the system (Cl) is the…
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5. The covid vaccine contains mrna this will produce a. passive adaptive immunity b. active adaptive immunity c. innate protien.
Which of the following statements is NOT true of a fever?a. Temperature is regulated by chemicals that reset the body's thermostat to a higher setting.b. The higher than normal body temperature impairs the functions of some bacteria.c. The higher than normal body temperature is always harmful.d. The higher temperature impairs leukocytes andantibody production.e. Both c and d. Which of the following statements is NOT true of antibodies?a. They bind to foreign antigens, making them susceptible to being engulfed by phagocytes.b. They serve as specific binding sites on B cells.c. An antibody is usually able to bind to a variety of different types of antigensd. They are composed of two heavy chains and two light chains.
Maternal antibodies transmitted via the placenta: A. are an example of natural passive immunity B. are an example of natural active immunity C. are IgG antibodies D. both are IgG antibodies and are an example of natural active immunity E. both are IgG antibodies and are an example of natural passive immunity
8) In addition to the ABO self-antigen system, another red blood cell self-antigen system is the Rh factor. The gene for this self=antigen system exhibits complete dominance with Rh positive (the presence of self-antigen Rh) being completely dominant over Rh negative (the absence of the self-antigen Rh). Rh positive is symbolized as + and Rh negative is symbolized as -. a. Geraldo has B- blood and Arline has O+ blood. Geraldo’s father has B+ blood and his mother has O- blood. Arline’s mother has O= blood and her father has A+ blood. Geraldo and Arline have a daughter, Elise. Using a Punnett square, what are the possible blood types for Elise? b. What is Geraldo’s genotype? c. What is Arline’s genotype?