Cell Structure & Function

Cell Structure & Functionhttp://koning.ecsu.ctstateu.edu/cell/cell.html

Cell TheoryAll living things are made up of cells. Cells are the smallest parts of all living things. All cells come from other cells that divide to make new ones.

Definition of CellA cell is the smallest unit that is able to do life tasks.Examples of Cells

One celled organismPlant StemRed Blood Cell

Nerve Cell

BacteriaTypes of Cells We Will Study

PlantAnimal Parts of Cells Both cells have organelles in them.Each organelle has a special job to do to help the cell function.We will only be learning about some of the organelles.http://library.thinkquest.org/C004535/eukaryotic_cells.htmlhttp://waynesword.palomar.edu/images/plant3.gifTypical Plant Cell

Typical Animal Cell

http://web.jjay.cuny.edu/~acarpi/NSC/images/cell.gifCell Parts(You saw lots of cell parts, called organelles, in the preceding slides.Dont worry we will only study the organelles on the following slides.)Are you ready?Introducing the Organelles!Surrounding the CellCell MembraneOuter membrane of cell that controls movement of nutrients, water and gases in and out of the cell

http://library.thinkquest.org/12413/structures.html

Cell WallIn plant cells Supports & protects the cell

http://library.thinkquest.org/12413/structures.html

Inside the CellNucleus Directs cell activitiesContains genetic material - DNAChromosomesIn nucleusMade of DNAContain instructions for traits & characteristics

http://library.thinkquest.org/12413/structures.html

CytoplasmGel-like mixtureAll organelles are in the cytoplasm

MitochondriaProduces energy by chemical reactions that break down fats & carbohydrates

http://library.thinkquest.org/12413/structures.html

VacuolesSacs for storageContains water Help plants keep shape

http://library.thinkquest.org/12413/structures.html

ChloroplastIn plant cellsContains green chlorophyllIt is where photosynthesis takes place

http://library.thinkquest.org/12413/structures.html