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Student Academic Learning Services Page 1 of 4 The Cell Cycle From the moment a new body cell is formed, it begins its journey in the cell cycle. This journey consists of a series of stages, or phases. Fill in the blanks below, using the word bank provided (next page), in order to tell the story of a cell’s journey. 1st: _____________________ Chromosomes are ___________________ (# doubles) Cell ____________ The number of organelles _____________ 2nd: _____________________ _______________ begins (cell begins to divide) Nucleolus disappears _______________ (or poles) appear and begin to move to opposite ends of cell ____________ __________ attach to the centromere 3rd: _____________________ Chromosomes are aligned at the ______________ ___________ ___________ spindle 4th: _____________________ ___________ _____________ are pulled apart and begin to move to _______________ ends of cell 5th: _____________________ Chromosomes become indistinct chromatin again Nucleoli ______________ Spindle disappears Nuclear envelope ________________ 6th: _____________________ Formation of a _____________ _____________, then Complete _____________ of the cytoplasm and organelles www.durhamcollege.ca/sals Student Services building (SSB), Room 204 905.721.2000 ext. 2491 This document last updated: 7/18/2013 Student Academic Learning Services Page 2 of 4 Word Bank anaphase division interphase reassembles border doubles metaphase shrinks centrioles duplicated mitosis sister chromatids chromatin equator opposite spindle fibers cleavage furrow fully formed prophase telophase cytokinesis grows reappear Compare Mitosis and Meiosis Contrast between mitosis and meiosis by providing four (4) differences between the two types of division. Mitosis www.durhamcollege.ca/sals Meiosis Student Services building (SSB), Room 204 905.721.2000 ext. 2491 This document last updated: 7/18/2013 Student Academic Learning Services Page 3 of 4 The Cell Cycle - Answers 1st: Interphase Chromosomes are duplicated (# doubles) Cell grows The number of organelles doubles 2nd: Prophase Mitosis begins (cell begins to divide) Nucleolus disappears Centrioles (or poles) appear and begin to move to opposite ends of cell Spindle fibers attach to the centromeres 3rd: Metaphase Chromosomes are aligned at the equator Fully formed spindle 4th: Anaphase Sister chromatids are pulled apart and begin to move to opposite ends of cell 5th: Telophase Chromosomes become indistinct chromatin again Nucleoli reappear Spindle disappears Nuclear envelope reassembles 6th: Cytokinesis Formation of a cleavage furrow, then Complete division of the cytoplasm and organelles www.durhamcollege.ca/sals Student Services building (SSB), Room 204 905.721.2000 ext. 2491 This document last updated: 7/18/2013 Student Academic Learning Services Page 4 of 4 Compare Mitosis and Meiosis Contrast between mitosis and meiosis by providing four (4) differences between the two types of division. Mitosis Growth and repair of body cells. Meiosis Formation of gametes. Occurs in body cells. Occurs in sex cells. 1 division. 2 divisions. Results in 2 diploid, genetically identical cells. Results in 4 haploid, genetically different cells. www.durhamcollege.ca/sals Student Services building (SSB), Room 204 905.721.2000 ext. 2491 This document last updated: 7/18/2013