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15 Cards in this Set
- Front
- Back
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Can animal cells look different? |
Yes but contain the same basic structures. Cells become specialised so they can carry out a particular job. |
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What jobs need to be done to keep an organism alive? |
Movement, Detecting information about the environment, Sending messages carrying chemicals around the body, Making chemicals the body needs. Reproducing and absorbing food |
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Three specialised animal cells |
Nerve cells Muscle cells Sperm cells |
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Describe nerve cells |
Have very long extensions of cytoplasm. This enables them to carry messages from one part of the body to another |
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Describe Muscle cells? |
Made from protein fibres that can rapidly expand and contract to create movement. They have the most mitrochondria of all cells because they need lots of energy. |
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Describe Muscle Cells? |
They are made from protein fibres that can rapidly expand and contract to create movement. They have the most mitrochondria of all cells because they need lots of energy. |
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Describe sperm cells? |
Have tails and huge heads. Their main job is to carry genetic material to an egg cell, so that it can be fertilised. Sperm cells have lots of mitrochondria because they must swim long distances. |
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Which cell transmits electrical messages? |
Nerve cells |
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Which cell contracts and expands to create movement? |
Muscle cells |
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Which cell carries genetic material for fertilisation? |
Sperm cells |
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How do plants make their own food? |
Photosynthesis |
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How does Photosynthesis work? |
Specialised cells in plants collect light and water and take in carbon dioxide. |
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How are specialised plant cells linked to the process of reproduction? |
Pollen cells are the male sex cell in plants. Some are carried by the wind, and the others stick to insect or bird pollinators. There are over 300,000 different types of pollen cells. |
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How many specialised cells in the body? |
More than 200
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What was the Nobel prize in 2012 given for? |
The discovery that specialised cells can be changed to become stem cells. |
