B cell receptors are collectively able to bind a huge variety of potential antigens, but T cell receptor bind a limited variety of antigens.
B cells produces a single species of antibody with a unique binding
site. All antibodies made by a B cell have same antigen-binding
site.
B cells can recognise and bind to surface antigens of virus and
bacteria inside and outside the where as the T cells can recognise
antigens outside the infected cells.
Hence the B cells are able to bind to more variety of the
pathogenic antigens where the T cells are limmited to few antigens
that can bind only outside of the cell.
Question 2 1 pts on of In which of the following ways do B cells and...
please answer all 4 questions :) Question 7 3 pts Which of the following occur in both B cells and T cells? o isotype switching O somatic recombination o alternative splicing to produce different isoforms of the receptor o alternative splicing to produce a secreted form of the receptor o somatic hypermutation Question 8 3 pts Multiple factors that increase antigen receptor diversity also increase formation of non- productive alleles. Which of the following would generate a non-productive allele? Select...
Question 10 3 During an infection: The same type of antibody is produced by many B cells One B cell can make more than two different antibodies, provided that they recognize the same antigen Each B-cell produces antibodies to a variety of antigens A variety of antibodies are produced by many B cells, but B cell only produces one type of antibody Question 11 3 pts How are the development of T cells and B cells different? Only T cells...
31. Which part of this T cell receptor is produced only AFTER the T cell has bound an antigen? A. The part labeled "A" B. The parts labeled "B" C. The entire T cell receptor D. None of it. It is all produced BEFORE antigen binding. E. T cells don't bind antigens; only antibodies do that. 37. How do Treg cells differ from Th cells? A. When Treg cells bind B7, they engulf and destroy it. B. Treg cells secrete...
Put the following steps in the process of B-cell activation in cause-and-effect order: Long-lived memory cells remain in the body to respond rapidly if the same antigen appears again The plasma cells produce and secrete large numbers of antibodies A helper T-cell with a complementary T-cell receptor binds the presented antigen The antigen is processed and presented by a class 2 MHC protein The T-cell releases cytokines that activate the B-cell An antigen binds to the B-cell receptors in the...
Explain how the adaptive immune response is able to generate the diversity of antigen receptors necessary to recognize the multitude of foreign antigens. Explain how clonal selection contributes to the development and expansion of antigen specific lymphocytes that do not respond to self. Distinguish cytokines and chemokines and their roles in the immune response What are the 3 roles of antibody in the immune response What are the two types of T cells that contribute to cellular immunity? What are...
Question 22 1 pts How do naïve and mature lymphocytes differ? Mature lymphocytes cannot bind to antigens Naive lymphocytes can differentiate to become either B or T cells; Mature lymphocytes are cells that have made that decision and cannot switch back. O Mature lymphocytes have not encountered an antigen before Nalve lymphocytes have not encountered an antigen before Naive lymphocytes cannot bind to antigens
QUESTION 1 When cells stimulate other cells at long distances, it is referred to as: paracrine loops autocrine loops synaptic signaling endocrine signaling 1 points QUESTION 2 What region of a protein binds phosphorylated serines & tyrosines on another protein? SH2 domain ligand cAMP receptor monomers 1 points QUESTION 3 Activation of a serpentine receptor can lead to: cAMP generation GTP-binding of G proteins activation of Protein Kinase A all of the above 1 points QUESTION 4...
Compare and contrast innate and adaptive immunity by explaining how they differ is the following 2 questions (I-III). Please answer in complete sentences. How do these 2 types of immunity differ is the timing of their response? How do the receptors as innate and adaptive immune cells differ in what they recognize? Please describe what the receptors on immune cells recognize and what the receptors on adaptive immune cells recognize. Complement proteins normally circulate in the blood and provide early...
15. What is a major difference between Th and Tc cells? A. Tc can bind to almost any infected cell; Th only bind infected antigen presenting cells B. Tc mostly secrete cytokines; Th secrete histamine C. Effector Ty cells induce apoptosis; effector Tc cells induce humoral immunity D. TH cells produce B7, but Tc cells produce interleukin-2 E. T cells undergo clonal deletion; Tc undergo clonal expansion 19. Humans with the mutation IL<tmlhor> fail to produce interleukin-2. Which of the...
Make a table with two columns to compare and contrast the ways in which T cells and B cells recognise antigen, the antigens that are recognised by the two types of cell, and the ways in which the cells become activated. Aim to make at least five distinct comparisons.