A.S Biology Unit 1.6 Immunity Application Questions

lilaruli's version from 2017-11-29 12:14


Question Answer
From your knowledge of cell-mediated immunity and lung structure suggest why humans infected by bird flu may sometimes die from suffocationBird flu infects the lungs, leading to massive overproduction of T cells. Accumulation of these cells may block the airways/fill the alveoli and cause suffocation
What is the purpose of adding detergent to the mixture of B cells and tumour cells?To break down the cell surface membrane allowing B cells and tumour cells to fuse.
When the detergent is added to the cells, the mixture is gently agitated. Suggest a reason why.To ensure the B cells and tumour cells repeatedly come into physical contact - essential if they are to fuse.
Why are cells from cancer tumours used to fuse with the B cells?Because b cells are short-lived and do not divide outside of the body. Tumour cells are long-lived and divide outside of the body. Using both of them leads to long-lived B cells that can be grown outside of the body.
Some B cells and tumour cells fuse together. Suggest which other cells might also fuse together?B cells with B cells, tumour cells with tumour cells.
How might an organisation funding research influence the outcome of that research without dishonestly altering the findings?Present the findings in an incomplete/biased way, ignore unfavourable findings, withdraw funding for research that seems likely to find unfavourable findings, only fund research likely to produce favourable findings