Homework 7 Flashcards
Which of the following statements about macrophages is FALSE?
Typically reside in the lymphoid tissue.
what is true about macrophages
Antigen presenting cells that aid in the adaptive immune response, Phagocytes involved in the innate immune response, long lived
Which of the following statements about MHC class II molecules is true?
They present extracellular antigens.
what is false about MHC II molecules
They are used to present antigen to cytotoxic T-cells, They are found on all nucleated cells, They are used to present antigen to CD8 T-cells
An immune deficiency causes a severe reduction in the amount of MHC-II expressed on the surface of professional antigen presenting cells. Which immune processes will be LEAST impacted by this deficiency?
Cytotoxic T-cell activation
An immune deficiency causes a severe reduction in the amount of MHC-II expressed on the surface of professional antigen presenting cells. Which immune processes will be impacted by this deficiency?
B cell activation, antibody production, Fc-receptor phagocytosis by macrophages
Opsonization is a process whereby innate and adaptive immunity work together to…
phagocytose an invader.
Bacterial pathogens use specialized secretion systems to inject host cells with… while … are secreted to the extracellular space
effectors, toxins
All of the following are true of toxins EXCEPT. Multiple answers may be selected.
Only target host proecceses inside the cell, They only target host processes outside the cell, Are secreted through specialized secretion machince into host cells
what is true about toxins
They can be used to acquire nutrients, They can disrupt host cells processes outside or inside of the cell
The Yersina pestis T3SS injects effectors into cells expressing the… receptor to disrupt phagocytosis, which will prevent the development of… that might aid in clearing the infection.
fMET, humoral immunity
what do all viruses contain
a capsid and a genome
Enveloped viruses are most typically associated with … infections and are typically … stable to survival outside of the host
latent, less
what does not contribute to the inability to cure HIV
a segmented genome
what features of influenza A contribute to its capacity to cause global pandemics
segmented genome, broad host range
