CIE IGCSE Biology Flashcards: Levels of organisation

Flashcards for levels of organisation topic for Cambridge International Examinations IGCSE Biology.

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  • Created by: Varshini
  • Created on: 09-03-13 08:31
Explain how the structure of ciliated cells relate to their function?
They have a layer of tiny hair called 'cilia' which can move and push mucus from one place to another. The mucus is sticky, so it can transport trapped dust and microbes when it is pushed by the cilia.
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Explain how the structure of root hair cells relate to their function?
Root hair cells are found in the roots of the plants for the absorption of minerals and water from the soil water. The cell has a long extension (root hair) which increases the surface area for the absorption of materials.
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Explain how the structure of xylem vessels relate to their function?
Transports water and supports the plant. The cell has no cytoplasm (so water can pass freely), no end wall (so that many cells can form a continuous tube) and walls strengthened with a waterproof substance called lignin.
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Explain how the structure of muscle cells relate to their function?
Muscle cells are for contraction so that structures can be brought closer together. They contain lots of protein fibres in the cytoplasm which can shorten the cell when energy is available.
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Explain how the structure of red blood cells relate to their function?
Red blood cells transport oxygen from the lungs to the tissues. The cytoplasm is filled with the pigment haemoglobin which carries oxygen. The cells have no nucleus leaving more space for haemoglobin, and they are very flexible.
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What is a tissue?
A group of cells with similar structures, working together to perform a shared function.
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What is an organ?
A structure made up of a group of tissues, working together to perform specific functions.
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What is an organ system?
A group of organs with related functions, working together to perform body functions.
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Other cards in this set

Card 2

Front

Root hair cells are found in the roots of the plants for the absorption of minerals and water from the soil water. The cell has a long extension (root hair) which increases the surface area for the absorption of materials.

Back

Explain how the structure of root hair cells relate to their function?

Card 3

Front

Transports water and supports the plant. The cell has no cytoplasm (so water can pass freely), no end wall (so that many cells can form a continuous tube) and walls strengthened with a waterproof substance called lignin.

Back

Preview of the back of card 3

Card 4

Front

Muscle cells are for contraction so that structures can be brought closer together. They contain lots of protein fibres in the cytoplasm which can shorten the cell when energy is available.

Back

Preview of the back of card 4

Card 5

Front

Red blood cells transport oxygen from the lungs to the tissues. The cytoplasm is filled with the pigment haemoglobin which carries oxygen. The cells have no nucleus leaving more space for haemoglobin, and they are very flexible.

Back

Preview of the back of card 5
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