Do First NO DFAD today Listen to instructions very carefully. Take out your cell phone and place it on the table. Remove your hands from your phone and make eye contact with me to let me know you have completed this step. If you don t have a phone do not worry about it. Just sit silently and find a partner to work with. When I say Go. you will open an internet browser page like Safari or Chrome. Then type in the website MrFitzBiology.com No spaces, capitalization does not matter. Turn and talk to a partner and find out when Quiz #10 is this week.
Unit 4 is all about Prokaryotic Cells and Viruses
Cell Theory All living things are made of cells The cell is the basic unit of life in all organism. All cells come from preexisting cells
Prokaryotes vs. Eukaryotes Prokaryotes: No Nucleus (Archaea, Bacteria) Eukaryotes: DNA inside Nucleus (Protists, Fungi, Plants, Animals)
Prokaryotic Cells - do NOT have a nucleus or other membrane-bound organelles Eukaryotic - Cells that contain a nucleus If its on the board, then its in your NOTES!
Prokaryotes The two types of prokaryotes are bacteria and archaea. Bacteria and archaebacteria are unicellular. There are many different types of bacteria some are good for you and some are not
Structure of Bacteria Remember, they are prokaryotes what does that mean? PRO MEANS- NO!!! No what? No NUCLEUS.
Structure of Bacteria Capsule outer covering of bacteria, made of polysaccharides
Structure of Bacteria Cell Wall layer in between plasma membrane & capsule. Made of peptidoglycan (a collection of sugars and proteins).
Structure of Bacteria Plasma Membrane layer below cell wall. Made of lipids (just like ours!). Acts as a selective barrier
Plasma Membrane Gives bacteria its shape. Acts as a selective barrier Keeps good stuff (nutrients) inside Bad stuff (wastes) out!
Structure of Bacteria Cytoplasm - Holds organelles in place Jello-like fluid inside cell
Structure of Bacteria If its on the board, then its in your NOTES! Flagellum whip-like appendage at back of cell. Helps bacteria move!
Structure of Bacteria Nucleoid DNA is in a CIRCULAR chromosome free floating in the bacterial cell. (Remember, this is not the nucleus)
CFU: A mutant bacteria exists and it can t swim! What structure do you think is mutated in the bacteria? Take 30 seconds to think silently to yourself about which prokaryotic cell part is used for movement. Use your notes and have an answer ready, I might call on you! Flagella!
CFU #2 Take 30 seconds to turn and talk with a partner. Use your notes and have an answer ready, I might call on you! Removing which structure from a prokaryotic cell would make it easier for your body to destroy? 1. Pilus 2. Flagellum 3. Capsule 4. Plasma membrane
Short Answer (one or two word answer) with a table partner 5 mins 2. Name the 3 structures that enclose bacterial cells, starting from the innermost and ending with the outermost. 3. Why is the DNA described as Free floating? 4. All the internal structures are suspended (floating) in what substance? 5. What is the tail-like structure called? 6. What might be the purpose of this structure?
Short Answer (one or two word answer) with a table partner 5 mins Name the 3 structures that enclose bacterial cells, starting from the innermost and ending with the outermost. Plasma membrane, cell wall, capsule Why is the DNA described as Free floating? It is not enclosed by a membrane All the internal structures are suspended (floating) in what substance? Cytoplasm What is the tail-like structure called? Flagellum What might be the purpose of this structure? Swimming/movement
Independent Practice Answer the remaining questions on page 2 and 3. Work must be done silently and independently. No Talking. If you have a question or request raise a silent hand and be patient. If the class is too loud I will assign homework. For independent practice, today we will be working silently and independently for 7 minutes. 7 mins
Questioning: Ask a question about a specific step. Ask a question related to a specific section of the guided notes. Discussion Directly answer each question on your paper by solving each problem step by step. Directly respond to the questions and comments of peers. Used discussion stems to promote productive discussion. Had appropriate section of guided notes open while working on the corresponding section of independent practice. Maturity & Behavior Maintain a respectful tone 100% of the time. Re-evaluate your work when someone had a different answer. Participate and remain on task 100% of the time. Show Your Work Always be able to show evidence for what you state as fact, this is a good time to use your Biology Notebook. Group Practice For group work today, we will be using a Discussion Rubric. We will be working at a level two volume. During this time you need to be comparing your answers to make sure you and your table have all the correct answers. 8 mins