** Use the textbook and/or electronic device to answer the questions o What is Interphase? (pg. 96)...
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** Use the textbook and/or electronic device to answer the questions o What is Interphase? (pg. 96) Period before cell division; in this period the cell grows, makes a copy of its DNA and prepares to divide. o What is Mitosis? (pg. 97) Stage during which the cell’s nucleus divides into 2 nuclei (1 copy of the DNA is distributed into each of the two daughter cells). o What is Cytokinesis? (pg. 100) Cytokinesis completes the process of cell division; the cytoplasm divides and the organelles are distributed into each of the 2 new cells. Bellringer Monday 12/7/15 Unit: 4 Standard: Cell division & Mitosis Learning Target: I can explain the process of mitosis
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o Organisms are made of billions of cells o Cells get damaged and/or periodically die and need to be replaced o Living cells split into 2 identical copies to multiply Why do cells divide?
Transcript of ** Use the textbook and/or electronic device to answer the questions o What is Interphase? (pg. 96)...
** Use the textbook and/or electronic device to answer the questionso What is Interphase? (pg. 96)Period before cell division; in this period the cell grows, makes a copy of its DNA and prepares to divide.o What is Mitosis? (pg. 97)Stage during which the cell’s nucleus divides into 2 nuclei (1 copy of the DNA is distributed into each of the two daughter cells).o What is Cytokinesis? (pg. 100)Cytokinesis completes the process of cell division; the cytoplasm divides and the organelles are distributed into each of the 2 new cells.
Bellringer Monday 12/7/15Unit: 4 Standard: Cell division & Mitosis
Learning Target: I can explain the process of mitosis
MITOSISCELL DIVISION
oOrganisms are made of billions of cellsoCells get damaged and/or periodically die and
need to be replacedoLiving cells split into 2 identical copies to multiply
Why do cells divide?
Cell Life Cycle1) Interphase:operiod of growth and developmentoLongest phaseoCell gets larger & DNA gets copied2) Cell Division:onucleus divides into 2,each with its own copy of DNA (mitosis) it makes 2 cells
oType of asexual reproductionOnly one cell to generate
other cellsoCopy system of the cell
2 identical cells are generated
MITOSIS
Mitosis P
MA
TCytokinesis
oP - ProphaseoM - MetaphaseoA – AnaphaseoT – TelophaseoCytokinesis
INTERPHASE, thenMITOSIS
2 NEW CELLS
INTERPHASE
oPeriod of growth anddevelopmentoLongest phaseoDNA is unraveled at first(looks like spaghetti noodles)oCell is preparing to multiply:
DNA gets copied and coils into X-shaped chromosomes
Interphase
o Nuclear membrane dissolveso DNA now floats freely in cello DNA is in chromosome format
(condensed/coiled in X shape)o Chromosomes get connected to spindle
fibers
Prophase Metaphaseo Chromosomes line up in the
middle of the cell
o New nucleus forms around chromosomes
o Chromosomes are pulled into 2 pieces
o Pieces of chromosomes travel to opposite sides of the cell
Anaphase Telophase
o Cytoplasm divides in 2o Cell membrane encloses 2 new
cells
Cytokinesis Overview
o Mitosis makes 2 identical cellso Used to grow, replace cells that die
or get damaged, and repair wounds
o Single celled organisms use mitosis to reproduce
Conclusion
o List the 4 stages of mitosis (in order).PMAT - Prophase, Metaphase, Anaphase and Telophase
o Describe briefly the main events of Prophase.Nuclear membrane dissolves and chromosomes get connected to spindle fibers
o Describe briefly the main events of Metaphase.Chromosomes line up in the middle of the cell.
Bellringer Tuesday 12/8/15Unit: 4 Standard: Cell division & Mitosis
Learning Target: I can explain the process of mitosis
o Interphase and Prophase:DNA twoGrows oppositeCoil/condense chromosomes
o Metaphase and Anaphase:Polar middle
o Telophase and Cytokinesis:New originalNuclei “Cell is pinched in around its ________ “ – NOT USED!
Mitosis Worksheet – WORD BANK
