Cells The Building Blocks of Life Cells Cells
Cells The Building Blocks of Life
Cells § Cells are the basic unit of structure and function in living things § They contain all materials required for life
Parts of a Cell § Each part inside the cell has a special job or “function” to do! § Just like the parts of a city!
What types of jobs do cells need to perform? § Produce energy § Digest food § Get rid of wastes § Transport materials § Reproduce § Build materials
3 Main Areas 1) Cell Membrane– outer covering 2) Nucleus - oval center 3) Cytoplasm – jelly-like substance that holds organelles
Review § Why are cells so important? a. They contain all materials necessary for life b. They perform all life functions c. They are the basic unit of living things d. All of the Above
Cell Membrane § Protects cell § Acts as a gatekeeper or door way § Found in all types of cells!
Cell Wall § Outside the Cell Membrane § Only in PLANT Cells § Provides support
Nucleus § The control center for all cell activities § “City Hall” § Acts like the brain § Contains genetic material (DNA)
Cytoplasm § Jelly-like substance § Holds cell organelles § The “lawn”
Organelles § Organelles are the parts inside of the cell § They also have membranes § Like tiny “organs”
Review § What is the brain of the cell that controls all cell activities? a. b. c. d. Cytoplasm Nucleus Cell membrane Cell Wall
Mitochondria § Produces energy for the cell § The “power house”
Ribosomes § Produce protein for the cell § Like little factories
Endoplasmic Reticulum “ER” § Transports materials through the cell § Roadways or UPS truck
Golgi Body “Apparatus” § Receive, package, and carry materials around the cell § The post office
Lysosomes § Break down food & wastes § Garbage Collectors § Only in Animal Cells!
Review § What is the power-house of the cell called? a. b. c. d. Mitochondria Lysosome ER Golgi Body
Vacuoles § Storage water, food, and wastes § Storage Unit or Water Tower § Much larger in plant cells
Chloroplast § Contain chlorophyll (green pigment) § Photosynthesis § Capture sun’s energy § Only in Plant Cells!
Plant vs. Animal Cells Plant Cell § Cell Wall § Large central vacuole § Has Chloroplast § Square box-like shape Animal Cell § NO cell wall § Several smaller vacuoles § Has lysosomes § Round shape
Two types of cells Eukaryotic Cells Plant Cells Animal Cells Prokaryotic Cells
Comparing Cell Types Eukaryotic Cells § Multicellular organisms § Have organelles § More advanced § Have nucleus Prokaryotic Cells § Unicellular organisms § No organelles § Less advanced § No nucleus
Review § What do plant cells have that animal cell do NOT? a. b. c. d. Cell wall Chloroplasts Mitochondria Both a & b
Specialized Cells § Multicellular organisms have different types of cells for different jobs § EX: nerve cells, skin cells, blood cells
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