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Evolution. Lesson 2. Cells are the basic unit of life. Where do we find cells? How do we know something is a cell? Where did the first cells come from?. Bacteria are Everywhere. Bacteria Live In Your Guts. - PowerPoint PPT Presentation
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Evolution
Lesson 2
Cells are the basic unit of life
• Where do we find cells?• How do we know something is a cell?• Where did the first cells come from?
Bacteria are Everywhere
Bacteria Live In Your Guts
http://ngm.nationalgeographic.com/2013/01/125-microbes/oeggerli-photography#/05-intestinal-bacteria-670.jpg
Bacteria Live in Your Stomach
Bacteria Live in Your Mouth
Bacteria Live in Your Nose
Got Oxygen? Thank Cyanobacteria!
Similarities and Differences
• Connect the dots! Thinking about the Tree of Life concept, what characteristics can you use to determine how different species are related? How will you represent your data?
• Characteristics to consider include: – Energy source(s)– Mobility– Geography– Reproduction
Debrief
• Groups share out• If you were to construct a Tree of Life using
one or more of the characteristics presented, which would you use and why?
• What information do you need and how would you find it?