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Functions and Types of Cell

What are the functions of the cell?:

What are the functions of the cell? Cell Membrane controls what goes in and out of the cell Cytoplasm is where all the reactions take place A Nucleus is like the ‘’brain’’ of the cell and controls the activity of the cell. This applies to BOTH types of Cell

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Palisade Cells are designed for Photosynthesis Tall shape means a lot of surface area exposed down the side for absorbing C0 2 Good chance of light hitting the chloroplast before it reaches the bottom of the cell. Palisade Cells

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Specialist Cells have a particular functions that help them to carry out their job efficiently. You might be asked how a particular type of cell is adapted to the job it does. You will therefore need to make notes on the following pieces of information. Specialist Cells

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The sperm cell is designed to fertilise eggs. A sperm cell is very small and has a little tail which provides movement so it can swim and find an egg to fertilise. Its head contains enzymes (in the vacuole) which allow it to digest its way through an egg membrane so the two nuclei can join. It contains half the number of chromosomes in the nucleus - these carry genetic information from the father, which will be passed on to the offspring Sperm Cell

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The cilia cell is designed to stop lung damage. Cilia cells line all the air passages in your lungs. They have tiny hairs, which filter the air as it blows through. The hairs sweep mucus (snot) with trapped dust and bacteria up to the back of the throat where it is swallowed Cilia Cell

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The ovum (egg) cell is designed to be fertilized. An ovum is large and bulky because no active movement is needed - it just sits and waits for the sperm to find it. It contains yolk (in the cytoplasm) which provides a large food store needed for the developing young organism once it's fertilized. It contains half the number of chromosomes, which carry genetic information from the mother - this will be passed on to the offspring. Egg Cell

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The root hair cell is designed for absorbing the long hair cell increases the surface area of the root, which helps absorption of water and minerals. It has a really thin cell wall, which makes it easier for minerals to pass across into the root itself The root hair Cell

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Doughnut shape to allow maximum O2 absorbed by the haemoglobin they contain. The function is similar the Palisade Cells . They are doughnut shaped rather than tall to allow smooth passage through the capillaries. They are so packed with Haemoglobin that they have no room for a Nucleus Red Blood Cells

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Are specialised because they help protect us against disease. They do this in two ways: By engulfing the bacteria By producing Antibodies, which recognise a particular type of illness the first time you have it, so when it appears again, you will not become ill. This does not, however, work with viruses. White Blood Cells

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