Cell PEOPLE, Cell Size, and Cell Specialization

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

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.

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

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

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

CELL THEORY1. All living things are ________________________.

2. Cells are the basic unit of

____________ & _____________ in an organism.

(cell = basic unit of _____________)

3. Cells come from the reproduction

of ____________ cells

Cell image: http://waynesword.palomar.edu/lmexer1a.htm

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

________ __________ ___________

IMAGE SOURCES: see last slide

____________ ____________

IMAGE SOURCES: see last slide

Similar cells working together

___________ __________ ___________

IMAGE SOURCES: see last slide

Different tissuesworking together

Different organsworking together