Which statement about antibodies is INCORRECT? Question 16 options: Antibodies can be both soluble and membrane-bound. Antibodies bind to antigens via induced fit. Antibodies never release antigens once they are bound together. More than 100 million different antibodies can be produced in humans. Antibodies typically bind to antigens more strongly than enzymes bind to substrates.
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Question 16 options:
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Antibodies can be both soluble and membrane-bound.
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Antibodies bind to antigens via induced fit.
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Antibodies never release antigens once they are bound together.
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More than 100 million different antibodies can be produced in humans.
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Antibodies typically bind to antigens more strongly than enzymes bind to substrates.
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- Which of the following primary sequence of an antibody has the greatest diversity? Question 13 options: All regions are similarly conserved. Fab region Complementarity-determining region (CDR) Fc region receptor binding domain (RBD)The following reactions are all antigen(Ag)-antibody(Ab) complexes. Match the description with the best reaction. Use each option only once.1. Antibodies react with soluble antigens and when they do, a complex forms that comes out of solution (e.g. is now insoluble).2. Reaction with insoluble antigens (a particle such as a cell with an antigen), rather than a soluble antigen.3. Antibodies coat antigens and enhances phagocytosis4. Antibodies with their antigen involve the complement proteins; can cause the invading organism to lyseAnswer choices to MATCH with the above sentences are:-Agglutination-Precipitin-Complement Fixation-OpsonizationQuestion 38 The constant region of each heavy chain determines the class of the heavy chain. Question 38 options: True False Question 39 The extensive variety of MHC proteins is apparent at a population level. Question 39 options: True False Question 40 the immunoglobulin sequences involved in antigen binding is situated in: Question 40 options: The constant region of the antibody The hyper-variable region of the antibody C terminal of the antibody Area close to disulfide bridges
- Question 39 Which of the following have immunological memory? O endothelial cells smooth muscle cells B cells activated plateletsThree (3) true positives (antigen is present and patient's sera reacted) and three (3) true negatives (antigen is not present and patient's sera did not react): Question 3 options: Is a tool that can be used to increase the probability that any alloantibodies identified is/are correct Is an AABB requirement in order to prove each alloantibody specificity Proves that the antibody procedure was performed correctly Gives a P value of 95%term can only be used once. anes, secretions [Choose J [Choose] ainst infection in the blood luid internal defenses humeral response nd against infection in the body colls cell-mediated response barrier defenses
- Question 10 of 14 Which of the following are true about MHC class I and MHC class II peptide loading? Select all that apply. MHC class I peptide loading occurs in four steps. Peptide loading of class I molecules generated from intracellular proteins occurs in the endoplasmic reticulum. ⒸMHC class II molecules are loaded before they are part of a vesicle capable of fusing with a phagolysosome. Peptide loading of class II molecules occurs later in the secretory pathway than that of MHC class I molecules.You can choose one or more than one option Antibodies: IMMUNOLOGY basic have two identical antigen-binding sites. consist of two identical heavy chains and two identical light chains. are secreted by plasma cells are produced by T lymphocytes during adaptive immune response can bind their constant heavy chain region to phagocytes Which of the following proteins are transmembrane proteins? CELL BIOLOGY basic integrin oestrogen receptor phospholipase C adenosine triphosphate (ATP) synthase growth factor receptor What are the correct statements? MOLECULAR BIOLOGY advanced A mutation located within a promoter can change the gene expression. An mRNA can be differentially spliced according to the tissue. RNA transcribed by the RNA polymerase II are translated The end of the transcription process requires a specific DNA sequence A reverse transcriptase can polymerise either a DNA or an RNA strand. Which of the following cells kill other cells by exocytosis of…In what way do B cells differ from other B cells? Question 12 options: some B cells differentiate into killer T cells, whereas other B cells do not different B cells possess different antigen receptor proteins different B cells mature in different organs some B cells act against intracellular pathogens, while others act against extracellular pathogens some B cells are only involved in antibody-mediated immune responses, while others are also involved in cell-mediated immune responses some B cells lack a plasma membrane
- QUESTION 4 A person with agammaglobulinemia: cannot produce antibodies cannot produce interferons does not have functional cell-mediated immunity makes too many antibodiesQUESTION 5 What do allergies to bee stings, transfusion reactions to improperly matched blood, and poison ivy reactions all have in common? harmful Ab responses involve degranulation of mast cells and basophiles involve immunodeficiencies involve T cells mediating a harmful response exaggerated and inappropriate immune responsesQuestion:- Place these in the order in which they occur in the immune system. What order do these events relating to effector responses occur in? Activated B cells leave lymph nodes and move into bloodstream Activated B and T cells exit the blood stream at the site of infection Activated T cells leave lymph nodes and move into bloodstream Activated Tcytotoxic cells look for and kill infected self cells Antibodies bind directly to non-self microbes Antibodies help improve phagocytosis (‘opsonization’) Antibodies leak out of bloodstream at site of infection Antibodies secreted in lymph node travel through bloodstream Memory B and T cells patrol around the body looking to be activated by the same microbial substances that activated them in the first place.