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What do they all have in common?

This activity involves comparing living and nonliving things to determine common traits shared by all living organisms. Students create a table listing these traits, examine samples, and discuss characteristics. By analyzing the data, students can draw conclusions about living organisms. The text provides information on Hooke's discovery, Leeuwenhook's contributions, and the abundance of bacteria on and within the human body. Various electron microscope images and resources for learning about cell structures are included.

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What do they all have in common?

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  1. What do they all have in common?

  2. Comparing living things and nonliving things Do all living things share certain characteristics? If so, what are those traits or characteristics? In groups, make up a table that has one column with the heading TRAITS. Then, in your group, decide what are the traits that all living things share. (between 5-10) Put those traits under your column heading. The group then examines each of the specimens and decides whether it has the trait or not. Explain why in bullet point form. You can disagree with your group, just explain why Once you have finished all the samples, analyze your data by explaining, in sentence form, what your results appear to show.

  3. Hooke’s – 1662 Leeuwenhook’s - 1680

  4. Prokaryotic cells

  5. If you are in good health and averagely diligent about hygiene, you will have a herd of about one trillion bacteria grazing on your fleshy plains – about a hundred thousand of them on every square centimetre of skin.

  6. There are trillions more tucked away in your gut and nasal passages, clinging to your hair and eyelashes, swimming over the surface of your eyes and drilling through the enamel of your teeth. Your digestive system alone is host to more than a hundred trillion microbes, of at least four hundred types The body consists of ten quadrillion cells but is host to about a hundred quadrillion bacterial cells.

  7. Eukaryotic animal cell

  8. Electron microscope picture

  9. Electron microscope picture

  10. Eukaryotic plant cell

  11. Good website comparing prokaryotes, eukaryotes, animal and plant cells http://www.wiley.com/legacy/college/boyer/0470003790/animations/cell_structure/cell_structure.htm

  12. Electron picture with scale

  13. Fig. 6-2 10 m Human height 1 m Length of some nerve and muscle cells 0.1 m Unaided eye Chicken egg 1 cm Frog egg 1 mm 100 µm Most plant and animal cells Light microscope 10 µm Nucleus Most bacteria Mitochondrion 1 µm Electron microscope Smallest bacteria 100 nm Viruses Ribosomes 10 nm Proteins Lipids 1 nm Small molecules Atoms 0.1 nm

  14. http://education.denniskunkel.com/Zoom-Ant-index.html Miscroscopic images of bugs

  15. http://education.denniskunkel.com/index.php Electron microscope pictures Virtual cell tour http://www.ibiblio.org/virtualcell/tour/cell/cell.htm http://www.explorelearning.com/ Gizmo – cell structure http://learn.genetics.utah.edu/ Brain pop – microscopes and cell structures Inside the cell, cell size and scale http://www.cellsalive.com/ Cell models, how big, cell cam, cell gallery and microscopes

  16. Up close with nature – check out pictures http://www.museumwales.ac.uk/en/rhagor/galleries/upclosenature/

  17. Size and google earth

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