Immuno Ch. 8 2023/2024 exam with 100% complete solutions

8-1 Which of the following contributes to the activation of naive T cells? a. neutrophils b. B cells c. macrophages d. dendritic cells e. basophils correct answersd 8-6 Macrophages exhibit all of the following characteristics except _____. a. they trap and degrade pathogens in secondary lymphoid organs b. they deliver co-stimulatory signals to naive T cells needed for T-cell priming c. they migrate from sites of infection to nearby secondary lymphoid organs e. they remove and degrade apoptotic lymphocytes from secondary lymphoid tissues f. they reside in both the cortex and medulla of lymph nodes. correct answersc 8-12 Which of the following describes an activated dendritic cell upon arriving in a lymph node? a. located in follicles and medulla of the lymph node b. associated mainly with antigen uptake and processing c. bears highly elaborated finger-like processes called dendrites d. expresses low levels of MHC class II molecules e. carries out apoptosis of lymphocytes. correct answersc 8-13 Dendritic cells take up, process or present antigen by all of the following routes except _____. a. receptor-mediated endocytosis of bacteria b. macropinocytosis of bacteria or viruses c. uptake of viruses using Toll-like receptor TLR9