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12 Cards in this Set
- Front
- Back
Multicellular organisms are made up from many .......... cell types that are .......... for their function. e.g. .......... cells, .......... cells and .......... blood cells.
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1. different 2. specialised 3. liver 4. muscle 5. white |
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What are stem cells? |
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All ......... organisms have some form of .......... cell. |
1. multicellular 2. stem |
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In humans, stem cells are found in early embryos and a few places in adults. What is the difference between stem cells found in the embryo and stem cells found in adults? |
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Stem cells .......... to become new cells, which then become .......... |
1. divide 2. specialised |
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What is 'differentiation'? |
The process by which a cell becomes specialised for its job. |
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What are adult stem cells used for in animals? |
They are used to replace damaged cells (e.g. to make new skin or blood cells). |
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What are stem cells needed for in plants? |
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Stem cells are also able to .......... to produce more .......... stem cells. |
1. divide 2. undifferentiated |
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Bones are living organs, containing nerves and blood vessels. What cells do adult stem cells found in the bone marrow differentiate into? |
They divide and differentiate to replace worn out blood cells - erythrocytes (red blood cells) and neutrophils (white blood cells). |
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Where in plants are stem cells found? |
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It is hoped that stem cells might cure diseases like Alzheimers and Parkinsons. Explain what each disease does to the body and how scientists are trying to tackle the problem. |
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