Transcript Prokaryotic
HELLO! When you arrive to class today… 1. Please get out your Agar Lab. 2. Complete the “Post-Lab” Questions with the person sitting next to you. 3. Have your notes from last night’s homework video on your desk! 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 Science Fact of the Day: The Golden "Poison Dart" frog in South America is most poisonous vertebrate in the world. CO: I will compare and contrast types of cells. LO: I will complete a T-Chart to compare/contrast prokaryotic and eukaryotic cells. I will look at types of cells with a partner. The Egg Demo How to fill in your notes: Prokaryotes BOTH Eukaryotes Six characteristics that all cells have in common: 1. Surrounded by a cell membrane. 2. Have ribosomes (make proteins) 3. Contain DNA 4. Have the ability to reproduce 5. Maintain homeostasis 6. Respond to stimuli Write this in the “BOTH” column! Cells fall into two broad categories depending on whether they contain a nucleus. Eukaryotes The next few slides will go on the right side of your T-Chart under “Eukaryotes” ONLY write the information in BOLD! Eukaryotes are… organisms with cells that contain a nucleus. Eukaryotic cells are… larger and more complex Eukaryotic cells… • • Have internal membrane-bound organelles. Have a nucleus. Eukaryotes are… both unicellular or multicellular. Eukaryotes can… reproduce sexually or asexually • Asexual reproduction of a sea anemone by fission. Eukaryotic examples… 1. Animals 2. Plants 3. Fungi 4. Protists Prokaryotes The next few slides will go on the left side of your T-Chart under “Prokaryotes” ONLY write the information in BOLD! Prokaryotic Cells… organisms that do NOT contain a nucleus. Prokaryotes are… smaller and simpler Prokaryotic cells… do not have membrane-bound organelles. Prokaryotes are… unicellular organisms. Prokaryotes… reproduce asexually Prokaryotic examples: bacteria. WHEN I SAY PROKARYOTE, YOU SAY BACTERIA! Flip your notes over… …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 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. The team to get the most right will get a prize Prokaryotic or Eukaryotic? Prokaryotic or Eukaryotic? Prokaryotic or Eukaryotic? Prokaryotic or Eukaryotic? Prokaryotic or Eukaryotic? Prokaryotic or Eukaryotic? Answers: 1. Prokaryotic—no nucleus, no organelles 2. Eukaryotic—plant cells, green discs are chloroplasts (organelle) 3. Eukaryotic—complex, contains a nucleus, many organelles 4. Prokaryotic—small, simple, no organelles are seen 5. Prokaryotic—small, simple, no organelles are seen 6. Eukaryotic—unicellular, organelles present 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!