Cell Growth and Division

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10-1 Cell Growth. Points of confinement to cell development The greater a cell is, the more requests the cell places on its DNA. The cell experiences difficulty sufficiently moving supplements and squanders over the cell film. 10-1 Cell Growth. DNA

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Slide 1

Cell Growth and Division Chapter 10

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10-1 Cell Growth Limits to cell development The greater a cell is, the more requests the cell puts on its DNA. The cell experiences difficulty sufficiently moving supplements and squanders over the cell layer

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10-1 Cell Growth DNA "over-burden" DNA – gives data that controls the cell's funtions Small cells have less requirement for that data than huge cells Big cells may require so much data that the single duplicate of DNA can't give it to all regions of the cell

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10-1 Cell Growth Exchanging materials Surface range of a cell decides the measure of material traded Oxygen, water, and nourishment Total territory of the cell film Volume of a cell decides how quick these materials are created (squander) or utilized (sustenance and oxygen)

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10-1 Cell Growth Ratio of surface region to volume Surface zone/volume Surface zone Length X Width X Number of sides units 2 Volume Length X Width X Height units 3

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10-1 Cell Growth If the length of the cell copies what happens to the ______? Volume Surface Area Ratio SA/V What does this do to the cell?

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10-1 Cell Growth Division of the Cell division The procedure by which a cell separates shaping two new little girl cells This happens when the cell turns out to be too enormous Before a cell partitions, it recreates its DNA.

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10-2 Cell Division What do we call the chromosomes when they have recreated? What is the structure that holds the repeated chromosomes together? What is the longest period of the cell cycle? In what period of the cell cycle does the cell do a large portion of their developing? What does the "S" remain for in the S-stage and what happens amid this stage?

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10-2 Cell Division Chromosomes Carries the cells hereditary data starting with one era then onto the next. Made of DNA and proteins Each phone contains a particular number of chromosomes Humans – 46 Apes - 48 Flies - 8 Carrot – 18 Dog - 78

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10-2 Cell Division Chromatids One of two indistinguishable "sister" parts of a copied chromosome Centromeres Area where the chromatids of a chromosome are appended

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10-2 Cell Division The phone cycle Interphase Period of the phone cycle between cell divisions Cell cycle During the phone cycle, a phone develops, gets ready for division, and partitions to frame two little girl cells, each of which then starts the cycle once more

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10-2 Cell Division Events of the phone cycle G 1 stage Cell development S stage DNA replication G 2 stage Preparation for mitosis M stage Cell division (mitosis and cytokinesis)

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10-2 Cell Division Mitosis Division of the phone core Four stages (PMAT) Prophase, metaphase, anaphase, and telophase

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10-2 Cell Division Prophase 1 st stage Longest stage Chromosomes get to be distinctly noticeable Nuclear envelope breaks down Centrioles isolate Spindles start to frame

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10-2 Cell Division

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10-2 Cell Division Metaphase Chromosomes line up over the focal point of the phone Each chromosome is associated with an axle fiber

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10-2 Cell Division

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10-2 Cell Division Anaphase Sister chromatids isolate into individual Chromosomes move toward inverse posts

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10-2 Cell Division

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10-2 Cell Division Telophase Chromosomes accumulate at the shafts and lose their shape New atomic envelopes encompass each arrangement of chromosomes

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10-2 Cell Division

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10-2 Cell Division Cytokinesis Division of the cytoplasm Each little girl cell has an indistinguishable arrangement of chromosomes

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10-2 Cell Division

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10-3 Regulating the Cell Cycle What are a portion of the controls of cell division? What are the substances that control the planning of the cell cycle? What is it called when a phone encounters uncontrolled cell development? What are a few reasons for uncontrolled cell development? What is the significance of the p53 quality?

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10-3 Regulating the Cell Cycle Controls of cell division Cell development can be turned on or off On Injury Off Cells get to be distinctly swarmed

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10-3 Regulating the Cell Cycle Cell cycle controllers Something that tells the cell when the time has come to partition, copy their chromosomes, or enter another stage Cyclin Protein that make axles frame Regulate the planning of the cell cycle in eukaryotic cells

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10-3 Regulating the Cell Cycle Internal controllers Proteins that react to occasions inside the cell Allow the cell to continue just when certain procedures have happened

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10-3 Regulating the Cell Cycle External controllers Proteins that react to occasions outside the cell Direct the cell to accelerate or back off the cell cycle Ex. Development consider

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10-3 Regulating the Cell Cycle Uncontrolled cell development Cancer cells don't react to the signs that manage the development of most cells

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