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Plant Cell Structure

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Title: Cell Structure & Function Author: Mary Poarch Last modified by: Patricia Darling Created Date: 4/25/2003 2:38:52 AM Document presentation format – PowerPoint PPT presentation

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Title: Plant Cell Structure


1
Plant Cell Structure Function
http//koning.ecsu.ctstateu.edu/cell/cell.html
2
What is Cell Theory?
  • All living things are made up of cells.
  • Cells are the smallest working units of all
    living things.
  • All cells come from preexisting cells through
    cell division.

3
Definition of Cell
  • A cell is the smallest unit that is capable of
    performing life functions.

4
Examples of Cells
Amoeba Proteus
Plant Stem
Bacteria
Red Blood Cell
Nerve Cell
5
Typical Plant Cell
http//waynesword.palomar.edu/images/plant3.gif
6
Cell Parts
  • Organelles

7
Surrounding the Cell
8
Cell Wall
  • Most commonly found in plant cells bacteria
  • Supports protects cells
  • Gives plant cells its shape

http//library.thinkquest.org/12413/structures.htm
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9
What is a Cell Membrane?
  • Outer membrane of cell that controls movement in
    and out of the cell
  • Double layer

http//library.thinkquest.org/12413/structures.htm
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10
Inside the Cell
11
What is the Nucleus?
  • Directs cell activities
  • Separated from cytoplasm by nuclear membrane
  • Contains genetic material - DNA

12
What is the Nuclear Membrane?
  • Surrounds nucleus
  • Made of two layers
  • Openings allow material to enter and leave
    nucleus

http//library.thinkquest.org/12413/structures.htm
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13
What is the Nucleolus?
  • Inside nucleus
  • Contains RNA to build proteins

http//library.thinkquest.org/12413/structures.htm
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14
What is Cytoplasm?
  • Gel-like mixture
  • Surrounded by cell membrane
  • Contains hereditary material

15
What is the Endoplasmic Reticulum?
  • Moves materials around in cell
  • Smooth type lacks ribosomes
  • Rough type (pictured) ribosomes embedded in
    surface

http//library.thinkquest.org/12413/structures.htm
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16
What are Ribosomes?
  • Each cell contains thousands
  • Make proteins
  • Found on endoplasmic reticulum floating
    throughout the cell

http//library.thinkquest.org/12413/structures.htm
l
17
What is the Mitochondria?
  • Produces energy through chemical reactions
    breaking down fats carbohydrates
  • Controls level of water and other materials in
    cell
  • Recycles and decomposes proteins, fats, and
    carbohydrates

http//library.thinkquest.org/12413/structures.htm
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18
What are Golgi Bodies?
  • Protein 'packaging plant'
  • Move materials within the cell
  • Move materials out of the cell

http//library.thinkquest.org/12413/structures.htm
l
19
What is the Lysosome?
  • Digestive 'plant' for proteins, fats, and
    carbohydrates
  • Transports undigested material to the cell
    membrane for removal
  • Cell breaks down if lysosome explodes

http//library.thinkquest.org/12413/structures.htm
l
20
What are Vacuoles?
  • Membrane-bound sacs for storage, digestion, and
    waste removal
  • Contains water solution
  • Help plants maintain shape

http//library.thinkquest.org/12413/structures.htm
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21
What is the Chloroplast?
  • Usually found in plant cells
  • Contains green chlorophyll
  • Where photosynthesis takes place

http//library.thinkquest.org/12413/structures.htm
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22
Cell Videos
  • http//www.youtube.com/watch?vO_DmgfxBNP4
  • Cells Alive
  • http//www.cellsalive.com/cells/cell_model.htm
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