1.2: Where do Living Things come from?

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Presentation transcript:

1.2: Where do Living Things come from? Science 8 Pathways

Investigating the Origin of Life What questions do you have about where the maggots came from? What hypothesis could you come up with to investigate this? Design an experiment to test your hypothesis.

Spontaneous Generation (pre-1600s) Observations: Maggots on rotting food Mold on bread Mushrooms from dead tree stumps “Spontaneous generation”: all life arose from non-living things! What might have happened in the 1600s to overturn this idea?

Testing Spontaneous Generation https://courses.lumenlearning.com/microbiology/chapter/spontaneous-generation/

https://courses. lumenlearning https://courses.lumenlearning.com/microbiology/chapter/spontaneous-generation/

The Microscope Microscope: Robert Hooke: - Invented in 1600s by Anton van Leeuwenhoek Robert Hooke: British scientist Pioneer in microscopy Discovered cells in tree tissue

Cell Theory All living things are made up of one or more cells. All new cells come from pre-existing cells. The cell is the basic unit of life.

Practice Complete workbook pg. 11: we will go over the answers all together.

Practice/Homework Cell Theory Textbook p.15 #2 Workbook p. 11 Characteristics of Living Things Workbook p. 4-5 Do pp. 3, 6 if have time. Next class: Viruses! Bring library books/something to do research on. Limited number of ipads also available. Cell Theory Textbook p.15 #2 Workbook p. 11

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