cell size and cell specialization chap & 7-4
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Cell Size and Cell Specialization Chap & 7-4. http://www.parlament-berlin.de/Galeriecopy.nsf/0/8ABC720262898739C1256A480037F869?OpenDocumen http://www.ncu.edu.tw/~ls/graph/faculty_pictures/whole_time/SLC/SLC_lab-1.jpg t. All living things made of cells BUT… organisms can be very different. - PowerPoint PPT PresentationTRANSCRIPT
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
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