CELLSGetting Rid of Waste, Eukaryotes and Prokaryotes

http://www.biologyjunction.com/images/plant20cell20lab1.jpg

GETTING RID OF WASTE

The cell makes waste in producing all the materials it does (proteins, lipids)

It needs a way to get rid of the waste so it doesn’t build up in the cell

http://camden.delaware.gov/files/2012/10/garbage-can1.jpg

LYSOSOMES

The lysosome has digestive enzymes that will break down waste material.

Vacuoles can help in this process by storing substances that need to be disposed of and sending them to the lysosome to digest

The digested material will leave the cell through the cell membrane

http://www.biology4kids.com/files/art/cell_lysosome1.gif

http://www.daviddarling.info/images/lysosome.gif

http://www.yellowtang.org/images/exocytosis2_c_ph_784.jpg

PROKARYOTES

Prokaryotes (like bacteria) are the simplest and smallest cells

They do not have a nucleus and most other internal parts of the cell

Because of this they cannot carry out specialized functions

Pro- meaning before, -karyote meaning seed

http://www.biology4kids.com/files/art/micro_prokar2_240x180.jpg

http://apbio-werle.wikispaces.com/file/view/prokaryote.jpg/64792606/prokaryote.jpg

INSIDE PROKARYOTES

Prokaryotes have cytoplasm inside the cell membrane

Their DNA is a simple loop that is inside the cytoplasm

They also have a cell wall surrounding the cell membrane that helps with structure and support

They do have ribosomes so they are able to make their own proteins from the DNA they have

http://ccyangyan.files.wordpress.com/2012/02/bio1001-image-prokaryote.jpg

MOVEMENT OF PROKARYOTES

Many prokaryotes also have flagella

These are long threadlike structures that help with movement

http://www.poyraz.gen.tr/wp-content/uploads/flagella_4782_1.jpg

http://www.detectingdesign.com/images/Flagellum/Eulena%20Flagella.jpg

EUKARYOTES

Eukaryotic cells evolved from prokaryotic cells

They have a nucleus that contains the cell’s DNA

They also have organelles which carry out activities in the cell

http://www.world-builders.org/lessons/less/les4/genes/eut_and_pro.gif

http://microorganismblog.files.wordpress.com/2012/07/eukaryotic-cell.jpg

EUKARYOTES

Eukaryotic cells can be unicellular (one cell) or multicellular (more than one cell)

Unicellular organisms can carry out ALL of life’s processes in that one cell

The bigger you are, the more complex you are (multicellular)

http://www.ubqool.com/static/contents/images/8592_9680_39695.jpg