7.Select ALL the TRUE statements regarding antibody (specifically, immunoglobulin G) structure.а.The antigen-binding site is located in the Fab portion.b.The antigen-binding site is formed as a combination of variable domains from one heavy and one light chain.Only the Fab portion has variable domains. SnipC.d. Only the Fe portion has constant domains.e. The Fc portion contains bound carbohydrate.The heavy and light chains are linked by disulfide bonds.The two heavy chains are linked by disulfide bonds.f.g.h. Only the Fc portion has constant domains.

Antibody An antibody is a protein molecule with large Y - shaped structure. It is also known as…

Select ALL the TRUE statements regarding antibody (specifically, immunoglobulin G) structure. The antigen-binding site is located in the Fab portion. b. The antigen-binding site is formed as a combination of variable domains from one heavy and one light chain. c. Only the Fab portion has variable domains. Snip d. Only the Feportion has constant domains. The Fe portion contains bound carbohydrate. f. The heavy and light chains are linked by disulfide bonds. g. The two heavy chains are linked by disulfide bonds. h. Only the Fcportion has constant domains.

Select ALL the TRUE statements regarding antibody (specifically, immunoglobulin G) structure. The antigen-binding site is located in the Fab portion. b. The antigen-binding site is formed as a combination of variable domains from one heavy and one light chain. c. Only the Fab portion has variable domains. Snip d. Only the Feportion has constant domains. The Fe portion contains bound carbohydrate. f. The heavy and light chains are linked by disulfide bonds. g. The two heavy chains are linked by disulfide bonds. h. Only the Fcportion has constant domains.

Biology: The Dynamic Science (MindTap Course List)

4th Edition

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Chapter45: Defenses Against Disease

Section: Chapter Questions

Problem 5TYK

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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…
(1) In antibody structure, where are can we find unique variable domains? A. at the tip of each polypeptide chain B. on the stem region of the antibody C. at the bottom of each polypeptide chain D. only on immunoglobulin E (2) The stem region of the antibody determines the: A. general immunological mechanism of action B. specific inflammatory response C. specific immunological mechnism of action D. shape of the variable domains (3) Antibodies are proteins that consists of ------ polypeptides in a ------ shaped structure. A. three, X B. four, Y C. five, clover D. two, Y
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.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. Antigens are made up of specific sequences of amino acids called ----- that determine their structure. A. epitopes B. multivalent sites C. paratropes D. constant regions 2. Which scenario best describes antibody cross-reactivity? A. A single pathogen with multiple epitopes is recognized by a multivalent antibody. B. Multipleepitopes are recognized by multiple antibodies C. A single epitope is recognized by multiple antibodies D. Two distinct, but structurally similar epitopes are recognized by the same antibody 3. What is the major benefit of cross-reactivity? A. Cross-reactivity permits the allergic response. B. Cross-reactivity promotes a faster immune response against unrelated pathogens. C. Cross-reactivity enhances immunity by providing protection against related pathogens. D. Cross-reactivity allows the immune system to respond to pathogens in various locations within the host (i.e., skin, mucosal tissues, extracellular fluids, etc.)
7.Which of the following describes passive immunity? Note: This is a multiple question, choose the correct answer below: antibodies transferred to the fetus from the mother across the placenta vaccination for polio catching a common cold allowing oneself to become infected with chicken pox
Immunity can be acquired in an active or passive way, and it can be natural or artificial. Watch this video (http://openstaxcollege.org/l/immunity) to see an animated discussion of passive and active immunity. What is an example of natural immunity acquired passively?
Antibodies are_________. a. antigen receptors b. made only by B cells c. proteins d. all of the above
11. In order to maintain homeostasis in the body, the lymphatic system and _(blank) _ system work closely together. Select one: a. Urinary b. Reproductive c. Digestive d. Cardiovascular e. Endocrine 12. Which of the following statements is not true about active immunity? Select one: a. It forms a specific defense against a particular antigen b. It will last for some time c. The particular antibody formed will react against many different antigens d. It is the result of T cell and B cell activity e. An antigen-antibody reaction must occur 15. What is released by macrophages and dendritic cells to stimulate the immune response? Select one: a. Histamines b. Antigens c. Lymphatic fluids d. Antibodies e. Cytokines
The Fab regions of an antibody are made of which protein chain? A) a heavy chain containing only constant regions B) a light chain containing variable and constant regions C) a heavy chain containing variable and constant regions D) both a light chain and a heavy chain containing variable and constant regions E) both a light chain containing variable and constant regions and a heavy chain containing only constant regions
1.A given B cell expresses only maternally or paternally derived heavy chains but never both. This observation is the result of A. antibodydiversity.B. isotypeswitching.C. allelicexclusion.D. affinitymaturation.E. randomVJgenerearrangement. 2.Which of the following antibody classes or isotypes facilitate the sequential binding of the C1, C4, C2, and C3 components of the complement system? A. IgAandIgD B. IgAandIgE C. IgDandIgM D. IgE and IgG E. IgMandIgG
1.If thymus gland is removed from a newborn, ___________.A. lymphoid organs are not affectedB. individual will not acquire immunologic competenceC. red bone marrow will take the function of thymusD. T lymphocytes will be activated 2. The white pulp of spleen _____.A. produce blood cells B. store plateletsC. destroy blood borne pathogens D. remove defective blood cells 3. Which of the following is TRUE?A. Tonsillitis of viral origin usually resolves on its own.B. Pharyngeal tonsillitis are pairedC. Tonsillitis are caused by viruses onlyD. Lingual tonsils are commonly removed in tonsillectomy 4. What will take over the functions of spleen if spleen is removed?A. thymus and liver B. red bone marrow and thymusC. lymph nodes and thymus D. red bone marrow and liver 5. Tissues that lack lymphatic capillaries include ______.A. Red bone marrow B. thymus C. lymph gland D. all of the above