This is class 107's biology blog. Please refrain from using inappropriate terms. Instead, use proper ENGLISH.

Tuesday, January 12, 2010

Root Hair Cell



Picture of a root hair cell in the soil ^

There are 5 organelles found in a root hair cell. They are the: nucleus, cytoplasm, plasma membrane, cell wall and vacuole. The root hair cell has a large surface area but is a delicate structure which can live up to 2 to 3 weeks. New root hair cells are formed at the top of the root to enable root hair coverage to be same. Root hair cells varies in length and diameter, from 5 - 17 micrometers in diameter and from 80 to 1500 micrometers in length. The root hair cells enable water to be absorbed by the plant through a thin root-like structure protruding out of the cell.

The nucleus contains chromatin material, consisting of the DNA of the cell which is important inherited by the daughter cells. The cell wall is a strong surface, surrounding the plasma membrane, which protects the cell and give it its shape. It also prevents too much expansion when water enters the cell. The plasma membrane controls the movement of substance into and out of the cell and is used for cell identification. The vacuole helps in isolating materials that pose as a threat to the cell and also helps in exporting waste products from the cell. The cytoplasm consists of cytosol and the cellular organelles, except the nucleus. The cytosol is made up of water, salts and organic molecules and many enzymes that speed up reactions. It is important as it suspends the cell organelles within it.

Picture 1: http://www.bbc.co.uk/schools/ks3bitesize/science/images/plant_root_cell.gif
Picture 2: http://www.dr-sanderson.org/images/root%20hair%20cell.jpg
Information gathered from: http://www.blurtit.com/q777326.html ; http://wiki.answers.com/Q/What_is_the_function_of_a_cell_wall ; http://wiki.answers.com/Q/What_is_the_function_of_a_plasma_membrane ; http://en.wikipedia.org/wiki/Vacuole

Done by: Lim Hao Yang, Neo Wei Hong, Wen Yue, Elgin Patt and Sean Phua

14 comments:

  1. I have learnt that there are 5 organelles found in a root hair cell. They are the: nucleus, cytoplasm, plasma membrane, cell wall and vacuole. T The root hair cells also enable water to be absorbed by the plant through a thin root-like structure protruding out of the cell.

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  2. I have learnt that the root hair cell has a large surface area but it is a delicate surface that can live up to 2-3 weeks. I have also learnt that root hair cells vary in their length and diameter.

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  3. Each of the organelles are important and special in helping the cell. The cytoplasm consist of cytosol,which is made up of water, salts, organic molecules and enzymes that speedup reactions.

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  4. I have learnt that there are 5 organelles, and each of them are unique, as each play a part in keeping the plant alive. And also that the cytosol suspends the organelles inside it.

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  5. I learnt that all the organelles in the root hair cell are important for the cell to survive.The cytoplasm contains cytosol in it and it has a large surface area for more water to enter the cell.

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  6. I learnt that everything in the cell has to work together and a root hair cell can live from 2-3 weeks

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  7. i have learnt that there are 5 organelles found in a root hair cell. They are the: nucleus, cytoplasm, plasma membrane, cell wall and vacuole. T The root hair cells also enable water to be absorbed by the plant through a thin root-like structure protruding out of the cell.

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  8. can you enlarge the root hair cell pictures.

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  9. This comment has been removed by the author.

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  10. thank you soo much this has help so much my science teacher will be happy :)

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  11. thanks so much i am totally going to be ahead in class now xxxx

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  12. There are 5 organelles in root hair cells, so do you think "cytoplasm" and "nucleus"
    can be classified as an organelle?

    Definitely not.

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  13. organelles should be mitochondria,maybe Endoplasmic reticulum in root hair cells. correct me if im wrong i guess that mitochrondria provides the root hair cell energy by going through a process called aerobic respiraton, so as to to absorb nutrients mineral salts etc from the soil.Endoplasmic reticulum will then transport it to the xylem vessel to be transported to other parts of the cell.

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  14. This info has really helped me for school! Thanks!

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