Download Biology Notes: Mitosis

Name: _________________________________________________ Date: _______________ Period: ________ Biology Notes: Mitosis Directions: Fill in as we cover the topic in the PowerPoint. Corresponds to pages 138 – 142 in the textbook. What is Mitosis? • Mitosis: Cell division involving _________________________ (____________‐sex) cells • Involves only _______________________ cells • Form of _______________________ reproduction for some life (____________________&protista, fungi) • End Result: __________ genetically _______________________ “_______________________ cells” The Cell Cycle • Defined: _______________________ set of events in the_______________________ of a cell 1) _______________________ – G1, _____, G2 2) _______________________ 3) _______________________ 4) _______________________ 5) _______________________ Interphase • Divided into _____ Stages: • G1 Stage – _______________________ function performed – Cell _______________________ – _______________________ created (replicated) • S Stage – _______________________ (DNA strands) ______________________ • G2 Stage – Cell _______________________ – _______________________ function performed Prophase • ________ Mitosis Stage • __________________ (DNA strands) _______________into chromosomes • Nucleus ________________ _________________ spilling the chromosomes • _______________________ fibers form Metaphase • ________ stage of mitosis • Spindle fibers _______________________ to _______________________ of each chromosome • Spindle fibers _______________________ the chromosomes to the cell’s _______________________ Anaphase • ________ stage of mitosis • Spindle fibers __________________ apart the chromosomes – 1 ____________________ pulled to ____________________ direction Telophase • ________ stage of mitosis • Spindle fibers ______________ _______________ • Nuclei _______________around _______________ sets of chromatid • Chromatids _______________________ into _______________________ Cytokinesis • Defined: Dividing of the _______________ • In animals: Cell membrane ______________ inward creating a cleavage ______________ until membrane pinches______________. • End result: 2 ______________ diploid cells • In plants: Cell ______________ forms along the ______________to ______________ the two new nuclei. • End result: 2______________diploid cells Review 1) In order, name the 5 stages of the cell cycle: 1) _________________________________ 4) _________________________________ 2) _________________________________ 5) _________________________________ 3) _________________________________ 2) During which interphase stage do organelles replicate? __________________________________________ 3) What do you call the division of the cell’s cytoplasm? ___________________________________________ 4) Which type of cells divide by mitosis? ________________________________________________________ 5) During which interphase stage is DNA created? ________________________________________________ 6) During which stage do spindle fibers form? ___________________________________________________ 7) During which stage are chromosomes aligned in the middle? _____________________________________ 8) During which stage are chromatids separated? ________________________________________________ 9) During which stage does the nucleus dissolve? _________________________________________________ 10) What is the result of mitosis? ______________________________________________________________ 11) Using the line provided, put the following pictures of the cell cycle in order from start (1) to finish (5), then label which stage of the cell cycle each is in: