Cell Theory 1.)All living things are made up of cells. 2.)Cells are the smallest working units of...
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Transcript of Cell Theory 1.)All living things are made up of cells. 2.)Cells are the smallest working units of...
Cell Theory• 1.)All living things are made up of cells. • 2.)Cells are the smallest working units of
all living things. • 3.)All cells come from preexisting cells.
Two Cell CategoriesProkaryotes v.s.
EukaryotesPro=NO Eu (you)=Do
No nucleus NucleusNo organelles Many
organellesOnly Bacteria All Other Cells
Plant AnimalBacteria
Cell
The smallest unit capable of performing life functions.
Examples of CellsAmoeba Proteus
Plant Stem
Red Blood Cell
Nerve Cell
Bacteria
Cell PartsOrganelles- Specialized
structures in eukaryotic cells that perform specific functions.
Surrounding the Cell
Cell Membrane• A semi-permeable
membrane controls what enters/exits the cell. (plants AND animals)
http://library.thinkquest.org/12413/structures.html
Cell Wall• The cell wall gives the
plant cell structure and support
http://library.thinkquest.org/12413/structures.html
Inside the Cell
Nucleus
• The nucleus is the brain of the cell. Controls cell activities and protects the DNA
Chromosomes• Chromosomes (made
of DNA in the nucleus) have instructions for your traits
http://library.thinkquest.org/12413/structures.html
Cytoplasm• Gel-like mixture called
cytoplasm is surrounded by the cell membrane.
Endoplasmic ReticulumThe Rough Endoplasmic
Reticulum moves materials around in cell (has ribosomes attached)
http://library.thinkquest.org/12413/structures.html
Inside the cell
• The Smooth Endoplasmic Reticulum helps makes lipids
Inside the Cell (honors) slide• Mitochondria breaks down
food/oxygen to create energy/power in the form of carbohydrates for the cell.
• Has it’s own DNA like the nucleus (other organelles don’t).
• Reproduces within the cell based on demand
http://library.thinkquest.org/12413/structures.html
Inside the Cell• Proteins are made by
the ribosomes
http://library.thinkquest.org/12413/structures.html
Golgi Bodies• Protein are modified,
packaged, sorted and shipped by the Golgi Bodies.
http://library.thinkquest.org/12413/structures.html
Inside the Cell (honors slide)• Photosynthesis
(conversion of water, sunlight, and carbon dioxide into carbs) happens in the chloroplast of only plant cells
• Has it’s own DNA and reproduces within the cell (similar to mitochondira)
http://library.thinkquest.org/12413/structures.html
Lysosome• Lysosomes comes from
Golgi Body• They breaks
down/digest: proteins, nucleic acids, carbohydrates, phospholipids
• Breaks down cells when it’s time for them to die
• Removes waste from cells
http://library.thinkquest.org/12413/structures.html
Vacuoles• Vacuoles are storage
sacs wastes and water.
http://library.thinkquest.org/12413/structures.html
Cytoskeleton
• Cytoskeletons are thin tubes/filaments– Give shape/support to
cell from inside– (Like tent poles hold
up a tent)