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7 Cards in this Set
- Front
- Back
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What are the two types of stem cells? |
adult stem cells - these are unspecialised cells that can develop into many (but not all) types of cells. embryonic stem cells - these are unspecialised cells that can develop into any type of cell. |
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What does the term 'specialised' mean? |
Cells may be specialised for a particular function. Their structure will allow them to carry this function out
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Examples of specialised cells: |
Cell Function
Leaf cell Absorbs light energy for photosynthesis Root hair cell Absorbs water and mineral ions from the soil Sperm cell Fertilises an egg cell - female gamete Red blood cells Contain haemoglobin to carry oxygen to the cells. |
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Uses of Stem Cells |
Making new brain cells to treat people with Parkinson’s diseaserebuilding bones and cartilagerepairing damaged immune systemsmaking replacement heart valves.
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Problems with Stem Cells |
Stem cells can be removed from human embryos that are a few days old, for example, from unused embryos left over from fertility treatment. As a result this raises ethical issues |
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Arguments of Stem Cells |
Some people think that destroying human embryos this way is murder. Others believe it is furthering our knowledge of science for the benefit of everyone |
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Advantage of theraputic cloning |
The donor cells will not be recognised as foreign by the recipient's body |
