unit 3 pp #6

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