View Attempt https://www.vista.ubc.ca/webct/urw/lc3645614022121.tp36456140441 < Your location: Assessments > View All Submissions > View Attempt View Attempt 1 of unlimited Title: Practice Midterm for Immunology Started: July 21, 2010 11:23 PM Submitted : July 21, 2010 11:53 PM Time spent: 00:30:14 Total score: 47/50 = 94% .......... Total score adjusted by 0.0 .......... Maximum possible score: 50 1. Completed What is a neutrophil? Student Response 1. A special type of macrophage that will activate T helper cells. 2. A polymorphonuclear leukocyte that makes antibodies. 3. A polymorphonuclear leukocyte that present antigen to helper T cells. Value Correct Answer 4. A type of macrophage - when its in the blood its called a neutrophil, and when it moves into the tissue it differentiates into a macrophage. 5. A polymorphonuclear leukocyte that can phagocytose bacteria. 100% Score: 1/1 2. Cells present antigens to other cells using MHC class I and MHC class II molecules. Which MHC molecule(s) the cell will use to present a lipid from a phagocytosed bacterium? Student Response 1. MHC I and MHC II 2. MHC II 3. MHC I 4. Neither MHC I or MHC II Score: 1/1 3. Which of the following statements about T cell receptors is TRUE? Student Response 1. T cell receptors must interact with antigen uniquely presented by other cells but not with free antigen. 2. T cell receptors bind complement proteins to form membrane attack complexes in foreign cells. 3. T cell receptors are made from one type of protein molecule. 1 of 16 Value Correct Answer 100% Value 100% Correct Answer 31/07/2010 6:49
View Attempt https://www.vista.ubc.ca/webct/urw/lc3645614022121.tp364561404412 ... Student Response Value Correct Answer 4. T cell receptors bind various cytokines such as Interleukin-2. 5. T cell receptors are secreted by the T cell once it has been activated by antigen. Score: 1/1 4. Which of the following is NOT TRUE of the ability of the T cell receptor (TCR) to specifically recognize antigen? Student Response 1. The antigen is recognized by the TCR is a linear sequence of amino acids that is associated with a protein of the major histocompatibility complex. 2. Only the alpha chain of the TCR is necessary for antigen recognition. 3. The recognition of antigen by the TCR can result in cytokine secretion and/or an increase in cell proliferation within the immune system. 4. The TCRs of a single T cell all have the same specificity: that is, they recognize the same MHC: peptide complex. 5. The antigen must be "processed" first by an accessory cell of immune system in order for it to bind to the TCR. Score: 0/1 Value Correct Answer 0% 5. Which of the following is NOT TRUE of CD4 and CD8 cell markers? Student Response Value 100% Correct Answer 1. Both are expressed on the cell surface of ALL mature, but naïve T cells. 2. They are co-receptor molecules for the TCR and only one is expressed on mature T cells. 3. They serve to distinguish different types of T cells, e.g., helper and