7-4 The Diversity of Cellular Life
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Transcript of 7-4 The Diversity of Cellular Life
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7-4 The Diversity of Cellular Life
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All living things made of cells BUT… organisms can be very different.
UNICELLULAR
MULTICELLULAR
Image from: http://www.agen.ufl.edu/~chyn/age2062/lect/lect_06/bacsiz.GIF
http://www.angelbabygifts.com/http://www.inclusive.co.uk/downloads/images/pics2/tree.gif
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MULTICELLULAR ORGANISM don’t just contain MANY CELLS.
Image from: http://www.isscr.org/images/ES-cell-Fig-2.jpg
They have different kinds of cells doing different jobs
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Cells in a multi-cellular organism become SPECIALIZED by turning different genes on and off
Image from: http://www.ncu.edu.tw/~ls/graph/faculty_pictures/whole_time/SLC/SLC_lab-1.jpg
Cell Specialization =DIFFERENTIATION
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Ex: SPECIALIZED ANIMAL CELLS
Muscle cells
Red blood cells
http://www.biologycorner.com/bio3/images/bloodcells3D.jpg
http://www.mlms.logan.k12.ut.us/~ajohnson/Cells.html
Cheek cells
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Ex: Specialized Plant cells
Guard cells
Xylem cells
Pollen
Guard cells: http://botit.botany.wisc.edu/courses/img/Botany_130/Diversity/Bryophytes/Anthoceros/Guard_cells.jpgXylem: http://botit.botany.wisc.edu/images/130/Secondary_Growth/Woody_Stems/Tilia_Stem/Secondary_Growth/One_Year_Stem/Primary_xylem_MC.jpgPollen: http://www.uic.edu/classes/bios/bios100/labs/pollen.jpg
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________ __________ ___________ATOMS MOLECULES ORGANELLES
IMAGE SOURCES: see last slide
Hierarchy of Living things
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____________ ____________ CELLS TISSUES
IMAGE SOURCES: see last slide
Similar cells working together
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___________ __________ ___________ORGANS
ORGAN SYSTEMS ORGANISM
IMAGE SOURCES: see last slide
Different tissuesworking together
Different organsworking together