This is achieved by post-transcriptional changes in the mRNA
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Describe post-transcriptional changes
Pre-mRNA contains uncoding regions called introns, spilceosomes splice them out and splice the coding regions called extrons together in random combinations to form mature mRNA
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When does the cell mediated response occur?
When pathogens infect and enter the body cells
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Briefly describe the cell mediated response
T killer cells become activated by cytokines and bind to infected APCs to produce memory cells and active T killer cells which perforate the infected cell
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Name two similarities between the humoral and cell mediated response
Both are specific to a particular antigen and both require formation of APCs and the presence of MHC
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What is the purpose of the humoral response?
To produce antibodies
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Where are B lymphocytes made and what is their role?
They are produced and matured in the bone marrow, they differentiate into plasma cells to produce antibdoies
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Where are T lymphocytes made and what is their role?
They are produced in the bone marrow and mature in the thymus gland, they can kill infected cells or trigger immune response
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What is an antigen?
An antigen is anything that causes an immune response
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Name the four antibody mechanisms
Opsonisation, precipitation, agglutination and lysis
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How do pathogens enter the body?
They enter through areas not covered by skin
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Other cards in this set
Card 2
Front
When do bacteria become resistant?
Back
When bacteria are no longer affected by an antibiotic they are said to be resistant to it
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