Cell growth, division, and reproduction

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  • Created by: Miguel
  • Created on: 10-02-13 16:48
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  • Cell Growth, Dinvision, and Reproduction
    • Limits to cell size
      • The larger a cell becomes, the more demands the cell places on its DNA. In addition, a larger cell is less efficient in moving nutrients and waste materials across the cell membrane.
      • Living cells store critical information in a molecule known as DNA. As a cell increases its size, the DNA does not. an information crisis would occur if the cell gets too large
      • Food, oxygen, and water enter a cell through cell membrane. Waste products leave a cell in the same way. The rate at which this exchange takes place depends on the surface area of the cell, which is the total area of the cell membrane. The rate at which food and oxygen are used up and waste products are produced depends on the cell's volume
    • Cell Division
      • Cell division is the process which a cell divides into new daughter cells. The cell replicates all of its DNA before cell division. The replication of cell solves the problem of information overload because each daughter cell gets one complete copy of genetic information and it also solves the problem of increasing size by reducing the cell volume.
    • Cell division and reproduction.
      • Asexual reproduction is the production of genetically identical offspring from a single parent. It is a simple, efficient, and effective way of reproduction and it allows population to increase in number very quickly.
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