In 2023, bioengineers researched the use of microscopic synthetic channels to supply oxygen to cells in engineered tissue blocks and prevent hypoxia (oxygen deprivation). The bioengineers used 40 individual engineered tissue blocks for this research.
What physical process is responsible for the movement of oxygen from the synthetic micro-channels into the surrounding cells?
Why does this transport process occur? Select one option:
Results from the research showed that the 40 tissue blocks regained an average of 42% of their normal cellular oxygen levels. One of the bioengineers claims: "this research shows that our micro-channel method will completely prevent hypoxia in human transplant organs." State three reasons why this bioengineer's claim is incorrect.
Suggest one way the bioengineers could extend their research.
The bioengineers estimate that a modified capillary design could successfully supply enough oxygen to save 18% of the 8.5 million patients worldwide who suffer from organ failure each year. Calculate how many of the 8.5 million patients could benefit from this design. Give your answer in millions.
82 exam-style questions on OCR GCSE Biology 2.1 Supplying the cell, covering 2.1.1 Transport across cell membranes, 2.1.2 Mitosis and the cell cycle, 2.1.3 Importance of cell differentiation, and 2.1.4 Stem cells. Each one has a worked solution and a mark scheme showing where the marks go.