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Bellwork: September 4 Look at the two cells below (A and B). Write at least 5 things you observe about these cells. (Example…tell me how they are similar or how they are different). Cell A. Cell B.
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Bellwork: September 4Look at the two cells below (A and B). Write at least 5 things you observe about these cells. (Example…tell me how they are similar or how they are different) Cell A Cell B
Science Fact of the Day:The Golden "Poison Dart" frog in South America is most poisonous vertebrate in the world.
Today…on pg 14 of your journal • If you didn’t do your homework… • Cornell notes over 183-186 • Answer questions 5 and 6 on pg 186 • Answer questions 1-8 on page 211 • If you did your homework • Divide your paper into 8 sections. At each slide record the name, draw what you see, is it prokaryotic or eukaryotic (how do you know)
Below your notes, number 1-6.With a partner, decide whether the cells on each slide are a prokaryotic or eukaryotic slide.Be sure to put a reason WHY you chose your answer.
Answers: • Prokaryotic—no nucleus, no organelles • Eukaryotic—plant cells, green discs are chloroplasts (organelle) • Eukaryotic—complex, contains a nucleus, many organelles • Prokaryotic—small, simple, no organelles are seen • Prokaryotic—small, simple, no organelles are seen • Eukaryotic—unicellular, organelles present
…on the top of the paper write “Endosymbiotic Theory”Only write what is in bold!
Endosymbiotic Theory • “endo” = inside of • “sym” = together • “biotic” = living • “theory” = scientific explanation based on scientific evidence …Put that all together and you get…
Endosymbiotic Theory • The theory that the eukaryotic cell is actually composed of prokaryotic cells • One prokaryotic cell living inside of another prokaryotic cell, made a more complex cell called the eukaryotic cell • Organelles were once independent prokaryotes
Endosymbiotic Theory Prokaryotic Cell #1 Prokaryotic Cell #2 (chloroplast) NEW Eukaryotic Cell Prokaryotic Cell #1 Prokaryotic Cell #2 (mitochondria) NEW Eukaryotic Cell
Endosymbiotic Theory Videos Endosymbiotic Clay-mation Endosymbiotic Theory: Big Tony and Little Jon
Exit Ticket! • On your stickie note write 3 major differences between prokaryotic and eukaryotic cells. • You do not need to put your name on it!