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All of Chapter 3
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Occurs in all ___ things ___ divide their cells to reproduce ___ use cell division for growth, development, repair, and reproduction Needs ___ to occur When a cell divides, each new cell gets a full set of DNA
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Located inside the ___ DNA (___) is a chemical that contains ___ for an organism’s ___ and ___ ____ structure Two strands that twist and are connected by rods of ___ http://www.youtube.com/watch?v=zwibgNGe4aY
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Let’s not forget that DNA gives us our ___ This is why people look different from others around the world DNA accounts for many things, such as ___, height, and even certain ___ traits!
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___ are structures of ___ DNA DNA tightly wraps itself into coils around proteins When a cell is ready to ___, the chromosomes come together and become ___ You can even see them under a light microscope!!!!
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When chromosomes ___ to make a second copy of DNA, they still stay attached to the old copy Called ___ Chromatids look like an ___ and are attached in the middle by a ___
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Even when you appear to stop growing, cell division ___ Average adult has about ___ cells! Cells take on different ___ and ___ to perform different functions Called ___ This is why your stomach cells and bone cells are different in appearance and function
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When your group is called, you will come up to the red table and look at the four prepared microscope slides. Be careful not to touch the stage or slide because it is perfectly focused on what you need to be looking at! You may move the adjustment knob to focus only! Choose a cell in your specimen that you feel shows the cell division process occurring. In the table below, draw what you observe and record 3 detailed observations for each specimen you view.
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In your notes section, create the following table: MicroscopeDrawing of 1 Cell3 observations 1 2
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Answer the following questions under your data table Predict what was happening to the parts of the cell in the specimen you observed. What evidence and prior knowledge do you have to support this? Were you able to see multiple examples of cell division taking place or only one? Why do you think this was the case? Did this surprise you?
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While you are waiting for your group to be called up, turn to page 80 Begin reading chapter 3.2 Record each phase of mitosis and describe the defining characteristics for each phase When you complete your observations, try to identify each of these phases in your specimens
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_____is the normal ___ and division of a cell Only ___ cells undergo ___ This process can take anywhere from a couple of hours to a couple of years depending on the type of cell!
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Cytokinesis
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_____ Part of the cell cycle when a cell is ___ In this phase, DNA begins to ___ and the cell grows ___ its size There are ___ in between DNA replication Think of this as the “___” part of the cell cycle
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___ Part of the cell cycle during which the nucleus ___. ___ DNA in the nucleus ___ to create chromosomes ▪ Chromosomes are ___ connected together Nucleus membrane ___
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___ Chromosomes line up in the ___ of the cell to get ready for mitosis
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___ Chromatids ___ from the ___, making two separate chromosomes These chromosomes go to ___ ends of the cell
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___ A ___ forms around each group of chromosomes Chromosomes ___ and DNA goes back to their looser form When the cells split into two, we call each new cell a “___”
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Occurs___ after mitosis The ___ in the cell In ___ cells, a ___ forms in the center of the dividing cell This ring contracts, pulling the membrane inward and pinching the cell into two In ___ cells, a ___forms in between the two new nuclei This plate becomes a cell wall
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http://www.brainpop.com/science/cellularlife andgenetics/mitosis/ http://www.brainpop.com/science/cellularlife andgenetics/mitosis/
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Purpose: To demonstrate understanding of each process of mitosis, as well as the transition from one phase to the next. Using PowerPoint or Prezi, create a flip book to show the processes of mitosis. Provide detailed explanations about each phase and include a picture to show what each phase looks like.
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You will be working with a clock buddy Person 1: Research details for interphase, prophase, and metaphase Provide descriptions and images Research images for transitional phases between these Person 2: Research details for anaphase, telophase, and cytokinesis Provide descriptions and images Research images for transitional phases between these
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Requirement1 pt3 pts5pts Sequence More than half of the phases are out of sequence (3+ are not). Transitional phases may or may not be included Almost all phases are in the proper sequence (1-2 are not). Transitional phases may or may not be included Each phase is in the proper sequence and transitional phases are included (ex: between interphase and prophase) Description Less than than half of major phases contain a detailed description of appearance and events (3+ do not) Most major phases contain a detailed description of appearance and events (1-2 do not) All major phases contain a detailed description of appearance and events Illustrations Less than than half of phases and contain an accurate & colorful illustration (3+ do not) Most phases and transitional phases contain an accurate & colorful illustration (1-2 do not) All phases and transitional phases contain an accurate & colorful illustration Grammar/Spell ing There are many spelling or grammatical mistakes (4+). Presentation is not neat or organized. There are few spelling or grammatical mistakes (1- 3). Presentation is neat and organized. There are no spelling or grammatical mistakes. Presentation is neat and organized.
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DNA- a chemical that contains genetic information for an organism’s growth and functions. It is a double helix structure and contains nucleotides. Chromosome- the physical structure in a cell that contains the cell’s genetic material… DNA wraps around proteins to create them Chromatid- one half of a chromosome; one set of DNA that is then duplicated
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Interphase- the part of the cell cycle during which a cell is not dividing Prophase- the part of mitosis in which the nuclear membrane disappears and chromosomes form Metaphase- the part of mitosis in which chromosomes line up in the center of the cell and spindle fibers attach to the chromosomes
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Anaphase- the part of mitosis in which chromosomes are pulled apart and brought to opposite ends of the cell Telophase- the part of mitosis in which a new nuclear membrane forms around each new set of DNA and chromosomes uncoil Cytokinesis- the division of the cytoplasm in a cell undergoing mitosis
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Cell Cycle- The continuous pattern of a cell’s life, including growth and replication Mitosis- The part of a cell’s life in which the nucleus divides to create two identical cells Asexual Reproduction- the process by which a single organism produces offspring that have the same genetic material
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___ One organism produces one or more new organisms that are ___ to itself and live___ of it Organism that produces new organisms is called the ___ New organisms are called ___
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___ A form of ___ reproduction that occurs in ___ cells only Produces two completely ___ In unicellular organisms, ___ are the same thing! http://www.youtube.com/watch?v=j3Co48tL8_A
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___ Both ___ cells can reproduce by budding An organism ___ on its body, which forms into a new offspring Buds can either ___ to parent or ___ when they get too big Identical genetic material to parents http://www.youtube.com/watch?v=4JIytOL-Q18
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http://www.youtube.com/watch?v=jk2RJm5R BEk http://www.youtube.com/watch?v=jk2RJm5R BEk
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In this lab, you will be exploring asexual reproduction in yeast. As we learned, yeast reproduces by budding, which means that it creates buds that eventually will fall off once the buds reach a certain size. These buds will become more yeast cells that live independently of its parent cell
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“I predict that……. because……” What are you predicting to see under the microscope? How quickly will you see this? How many will you see? Why do you think you will see this?
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Person 1 Get a microscope and paper towel Person 2 Get a slide and specimen
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http://www.youtube.com/watch?v=vtBbMD0 tPNs http://www.youtube.com/watch?v=vtBbMD0 tPNs (start at 0:25)
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___ New tissue growth at a site of a wound Can either mend a wound or form a new offspring
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http://www.youtube.com/watch?v=f7cXeWxx fD4 http://www.youtube.com/watch?v=f7cXeWxx fD4 http://www.youtube.com/watch?v=GEehfX6q UwM http://www.youtube.com/watch?v=GEehfX6q UwM http://www.youtube.com/watch?v=EsCSwVx 3GvA http://www.youtube.com/watch?v=EsCSwVx 3GvA
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