Cell Size and Cell Specialization Chap & 7-4

Cell Sizeand Cell Specialization

Chap & 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

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

SOUTH DAKOTA SCIENCE STANDARDS

Students will be able to:

• explain the process of specialization 9-12.L.1.3.A (ADVANCED)

• describe the relationships between the levels of organization in multi-cellular organisms (cells, tissues, organs, organ systems, and organism) (PROFICIENT)

• explain how gene expression regulates cell growth and differentiation 9-12.L.1.3.A (Tissue formation, development of new cells from original stem cells (ADVANCED)

9-12.N.1.1. Students are able to evaluate a scientific discovery to determine and describe how societal, cultural, and personal beliefs influence scientific investigations and interpretations.

• Recognize scientific knowledge is not merely a set of static facts but is dynamic and affords the best current explanations.

NATURE OF SCIENCE:Indicator 1: Understand the nature and origin of

scientific knowledge.

SOUTH DAKOTA ADVANCED SCIENCE STANDARDS

9-12.L.1.3A. Students are able to explain how gene expression regulates cell growth and differentiation.

Examples:Tissue formation Development of new cells from original stem cells

Core High School Life SciencePerformance Descriptors

High school students performing at the

PROFICIENT level:

Describe the relationship between structure and function

(cells, tissues, organs, organ systems, and organisms);

IMAGE BIBLIOGRAPHY

Paint image by Riedell

Paint image by Riedell

http://www.emc.maricopa.edu/faculty/farabee/BIOBK/BioBookCHEM2.html#Organic%20molecules

http://www.uic.edu/classes/bios/bios100/summer2004/lect02.htm

http://evolution.berkeley.edu/evosite/evo101/images/dna_bases.gif

http://vilenski.org/science/safari/cellstructure/golgi.html

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http://www.biology4kids.com/files/cell_nucleus.html

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http://www.biologyclass.net/mitochondria.jpe

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http://www.kufm.kagoshima-u.ac.jp/~anatomy2/BON/1016A03.jpg

http://www.ncu.edu.tw/~ls/graph/faculty_pictures/whole_time/SLC/SLC_lab-1.jpg

http://www.proctitispages.force9.co.uk/

http://www.inclusive.co.uk/downloads/images/pics2/tree.gif

http://people.eku.edu/ritchisong/homepage.htm

http://sps.k12.ar.us/massengale/animal%20dissections.htm

http://bestanimations.com

http://www.harrythecat.com/graphics/

http://vilenski.org/science/safari/fungus/fungus.html