Edexcel IGCSE Biology 2.6B Stem cells in medicine
Practise applying stem-cell ideas to medical treatments, including bone marrow transplants, heart repair, rejection risk and treatment trials.
- Syllabus
- First assessment 2019
- Course
- Biology 4BI1
Exam points
- explain how bone marrow stem cells can produce different blood cells for treatment
- compare patient and donor stem cells using antigens, DNA and rejection risk
- suggest evidence needed before a new cell treatment is used widely in patients
2.6B Stem cells in medicine question 1
The human heart pumps blood when its muscle tissue contracts.
Diagram 1 shows a human heart and a cross-section through its ventricles.
Diagram 1
Question (a)
(a)
Scientists are investigating the use of stem cells to repair damaged hearts.
The stem cells are injected into the ventricle muscle tissue.
[ 4 ]
Question (i)
(i)
Explain why stem cells could repair a damaged heart.
[ 2 ]
Question (ii)
(ii)
The stem cells are obtained from the person who has the damaged heart.
Explain why using stem cells from the same person is better than using stem cells from a different person.
[ 2 ]
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