unit 3 pp #6
TRANSCRIPT
Cell Guys, Cell Size, and Cell Specialize
Chap 7-1 & 7-4
http://www.parlament-berlin.de/Galeriecopy.nsf/0/8ABC720262898739C1256A480037F869?OpenDocumenhttp://www.ncu.edu.tw/~ls/graph/faculty_pictures/whole_time/SLC/SLC_lab-1.jpgt
Microscope image: http://www.answers.com/topic/microscopeCork image: http://www.cortex.de/img_kork/cork_cells_big.jpgHooke image: http://www.metaweb.com/wiki/upload/5/5c/Hookeyoungmtwb.jpg
1665-______________________used a microscope to examine a thin slice of cork and saw “little boxes”
He called them “CELLS” because they looked like the small rooms that monks lived in called Cells
Robert Hooke
Microscope/Leeuwenhoek image: http://www.answers.com/topic/microscopeAnimation from: http://web.jjay.cuny.edu/~acarpi/NSC/13-cells.htm
1673-___________________________________a Dutch microscope maker was the first to see LIVING ORGANISMS.
Anton van Leeuwenhoek
Plant image: http://www.epa.gov/maia/images/classification.gifSchleiden image: http://web.visionlearning.com/events/Schleiden_Apr5_2005.htm
1838-German botanist __________________________concluded that ALL PLANTS are made of cells
Matthias Schleiden
Schwann image: http://home.tiscalinet.ch/biografien/biografien/schwann.htmAnimals image: http://animaldiversity.ummz.umich.edu/index.htm
1839-German zoologist_________________________concluded that
ALL ANIMALS ARE MADE OF CELLS
Theodor Schwann
Virchow: http://www.parlament-berlin.de/Galeriecopy.nsf/0/8ABC720262898739C1256A480037F869?OpenDocumentMitosis: http://biology.dbs.umt.edu/biol101/labs/lab_6_images/sect01and06/Rebecca,%20tanner,%20and%20liam%20mitosis%20root%20tip.jpg
1855-German medical doctor _____________________saw dividing cellsin the microscopeand reasoned that cells come from other cells
Rudolph Virchow
CELL THEORY1. All living things are made of ____________.
2. Cells are the basic unit of structure & function
in an organism.
(cell = basic unit of _____________)3. Cells come only from the reproduction
of ____________ cells
Cell image: http://waynesword.palomar.edu/lmexer1a.htm
CELLS
existing
life
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
CELL SIZE
Typical cells range from: 5 – 50 micrometers (microns) in diameter
http://facstaff.bloomu.edu/gdavis/links%20100.htm
How big is a micron ( µ ) ?http://www.talentteacher.com/pics/005cb.jpg
1 cm = 10,000 microns 1” = 25,000 microns
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
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
SPECIALIZED ANIMAL CELLSMuscle cells
Red blood cells
http://www.biologycorner.com/bio3/images/bloodcells3D.jpg
http://www.mlms.logan.k12.ut.us/~ajohnson/Cells.html
Cheek cells
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
________ __________ ___________ATOMS MOLECULES ORGANELLES
IMAGE SOURCES: see last slide
____________ ____________ CELLS TISSUES
IMAGE SOURCES: see last slide
Similar cells working together
___________ __________ ___________ORGANS
ORGAN SYSTEMS ORGANISM
IMAGE SOURCES: see last slide
Different tissuesworking together
Different organsworking together