Cells: The Basic Units Cells: The Basic Units of Lifeof Life

Arethia SmithArethia Smith

Instructional TechnologyInstructional Technology

Hmmm….What do you know?Hmmm….What do you know?

►How are the cells How are the cells that make up living that make up living things like bricks? things like bricks? Explain your answer Explain your answer based on what you based on what you know about cells.know about cells.

Intro-Activity Intro-Activity

► Research at least Research at least fivefive cells of the cells of the human body. human body. Include a brief Include a brief description of what description of what each type of cell each type of cell does.does.

Let it RollLet it Roll

► Watch the following Watch the following movie clip to learn more movie clip to learn more about cells.about cells.

► http://http://player.discoveryeducatiplayer.discoveryeducation.com/index.cfm?on.com/index.cfm?guidassetid=a8258a12-guidassetid=a8258a12-ff4b-47b1-aed8-ff4b-47b1-aed8-17989f765ab417989f765ab4

► Make sure you are Make sure you are answering the questions answering the questions as the movie plays.as the movie plays.

Diversity of CellsDiversity of Cells

► Diversity of CellsDiversity of Cells-Cells were not -Cells were not

discovered until discovered until microscopes were microscopes were invented in the 1600’s.invented in the 1600’s.

--CellCell theory statestheory states: : 11. All . All organisms are made of organisms are made of cells, cells, 22. the cell is the . the cell is the basic unit of all living basic unit of all living things, and things, and 33. All cells . All cells come from other cells.come from other cells.

► All Cells have a All Cells have a cell cell membranemembrane, , cytoplasmcytoplasm and and DNADNA..

Diversity of Cells cont’dDiversity of Cells cont’d

► Two basic types of Two basic types of cells are prokaryotic cells are prokaryotic and eukaryotic.and eukaryotic.

► Eukaryotic cells Eukaryotic cells have have a nucleus and a nucleus and membrane-bound membrane-bound organelles. organelles. ProkaryoticProkaryotic cells do not.cells do not.

► Eukaryotes can be Eukaryotes can be single-celled or single-celled or multicellular.multicellular.

Diversity of Cells cont’dDiversity of Cells cont’d

► Eukaryotic cells have Eukaryotic cells have organelles that organelles that perform functions that perform functions that help cells remain alive.help cells remain alive.

► The The nucleusnucleus or a or a eukaryotic cell eukaryotic cell contains the cell’s contains the cell’s genetic material, genetic material, DNADNA..

► RibosomesRibosomes are the are the organelles that make organelles that make protein. protein.

Diversity of Cells cont’dDiversity of Cells cont’d

► The The endoplasmic reticulum endoplasmic reticulum and the and the GolgiGolgi complex complex make and process make and process proteins before they are proteins before they are transported to other transported to other parts of the cell or out of parts of the cell or out of the cell.the cell.

► MitochondriaMitochondria and and chloroplastchloroplast are are organelles that provide organelles that provide chemical energy for the chemical energy for the cell.cell.

Diversity of Cells cont’dDiversity of Cells cont’d

► LysosomesLysosomes are are organelles organelles responsible for responsible for digestion with the digestion with the cells. cells.

► In In plant cellsplant cells, , Vacuoles store cells Vacuoles store cells materials and act materials and act like large like large lysosomes. lysosomes.

It’s Exploration Time!!!It’s Exploration Time!!!

► It’s time to explore It’s time to explore the cell!! Click on the cell!! Click on the following the following website and website and complete the complete the activities as activities as instructed on the instructed on the site. Enjoy!!!site. Enjoy!!!

► http://www.ccboe.nhttp://www.ccboe.net/Teachers/cottinget/Teachers/cottingham_sue/cellswebqham_sue/cellswebquest.htmluest.html