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Brainstorm: Where does life come from?. Do Now. The Cell Theory. All living things are made up of cells Cells only arise from pre-existing cells. The cell is the basic unit of life. Was the first to use the term cell. Looked at cork cells under the compound microscope. Robert Hooke.
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The Cell Theory • All living things are made up of cells • Cells only arise from pre-existing cells. • The cell is the basic unit of life.
Was the first to use the term cell. Looked at cork cells under the compound microscope. Robert Hooke
Have no formed nucleus Are unicellular Are very disorganized. Do not have membrane bound organelles. Bacteria are prokaryotes Prokaryote
Eukaryote • Have a Nucleus • Have membrane bound organelles • Are very organized. • Can be uni/ or multicellular. • Ex.- animal, plant cells.
Controls movements into and out of the cell Is semi-permeable, or selectively permeable. Is made of a phospho-lipid bi-layer. Helps maintain the shape of the cell. The Cell Membrane
Jelly-like material which contains materials involved in cell metabolism. Gives the cell its shape Cytoplasm
Serves as the control center of the cell and contains DNA. Nucleolus- Contains RNA Nuclear membrane – Control what goes in or out of the Nucleus. The Nucleus and The Nucleolus
Contains code that guides all cell activities They are found in the nucleus. Chromosomes contain the genes that determine an organisms charateristics. Chromosomes
Endoplasmic Reticulum • Transports materials throughout the cell. • Rough ER contains Ribosomes. • Smooth ER has no Ribosomes
Sites of protein synthesis Ribosomes
Packages and secretes the proteins made by the Ribosomes. Look like stacks of pancakes. Golgi Bodies
Mitochondria • Power House of The Cell. • Makes ATP
Involved in cell division Produce Microtubules that pull chromosomes apart. Microtubules also give the cell structure. Are found inside the nucleus. The Centrioles
Plays a role in intercellular digestion Store food and water. Are much larger in plant cells. Vacuoles