Plant cells

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  • Created by: Jenna k
  • Created on: 20-03-14 07:01

Palisade cells

Palisade cells are leaf cells. They consist of a basic cell-surface membrane within a cellulose outer wall. It has a numleous, and valcuole, and in its cytoplasm there are many chloroplasts.

This cell is adapted to deal with diffusion and osmosis by:

  • Its long thing structure, that creats a short diffusion path.
  • Numerouse chlorplasts that carry out photosynthis.
  • large vacuole that pushes the cholorplasts to the edge of the cells.
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Chloroplasts

Chlorplasts are where photosynthis happens, and this is where the colour of the plant if found.

Cholorplasts consist of the chloroplast envelope which is a double membrane that surounds all the organelles. inside the cell in the Storma (cytoplasm) there are lot of different granules, such as lipids, enzymes and starch as well as ribosmoes and DNA. The main body of the chloroplasts are grana which are stacks of  disk like Thylakoids. This is where the first stage of photosynthis happens.

The cholorplast works by the granal membranes providing a large surface are to attach chlorophyll. Electrons carriers and enzymes attach these chemicals in a very ordily fashion to the grana. All the elerments are there and present in the structure of the cell so photosynthese can happen quickly.

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Cell wall

The cell wall is made up of cellulose that create a matrix of the firbrels, which strengthens the wall. Cellulose is a polysaccharide and thus froms a chanined formation as the alternating B glucose bonds form hydorgen bonds between the C02HO groups. In between the cell there is a small gap called the middle lamella which marks the bounderies of the cells.

The function of Cellulose cell walls are to provide mechanical support and strength so the cells have water that pass into then but they cant burst when the cells are in a hypotonic solution.

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Aminal/Plant

There is a distinct divide in animal and plant cells.

Plants have

  • cellulose walls
  • double membranes
  • chloroplasts
  • large central vaculoes
  • starch that is stored in the valuole

Animal cells have

  • Cell-srfacemenbrans and no cell wall
  • Chlorplasts arnt present
  • vaculoes are small if there at all
  • glycogen is the main storeage substance in our livers.
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Aminal/Plant

There is a distinct divide in animal and plant cells.

Plants have

  • cellulose walls
  • double membranes
  • chloroplasts
  • large central vaculoes
  • starch that is stored in the valuole

Animal cells have

  • Cell-srfacemenbrans and no cell wall
  • Chlorplasts arnt present
  • vaculoes are small if there at all
  • glycogen is the main storeage substance in our livers.
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