Name: _____________________ Unit 9: Review Packet Date: __________/Page#: ______ Mr. Jensen/Period: ____ Cell division and mitosis review Vocabulary: Define each of the following words. Cell division: __________The way that cells split to form new cells. ________________________ ______________________________________________________________________________ Mitosis: ______________Method of cell division, specifically the copying of the nucleus of a cell _ ______________________________________________________________________________ Binary fission: _________Method of asexual reproduction where a single parent cell divides into two offspring ____________________________________________________________________ Asexual: _____________New organisms created from one single parent ____________________ ______________________________________________________________________________ Chromosomes: ________The term used to describe the coiled chromatin within a cell’s nucleus __ ______________________________________________________________________________ Chromatin: ____________________ The term used to describe the uncoiled chromosomes ______________________________________________________________________________ Parent cell: ____________________ The cell that prepares for cell division and the divides ____ ______________________________________________________________________________ Daughter cell: __________________ The cell that is produced after cell division _____ ______________________________________________________________________________ DNA: _______________________The long molecule that is the blueprint of life ______________ ______________________________________________________________________________ Genes: __________ Part of the chromosomes that controls the traits of an organism ___________ ______________________________________________________________________________ List: Give the four reasons why cells divide. a. ______Repair/Replacement______ b. ______Growth/Development__________ c. _____Asexual Reproduction (Binary Fission)_________ d. ______Cell gets too big_____ Fill-in: Fill in the parts of the cell cycle and the blanks in the paragraph below. prophase interphase metaphase anaphase telophase The final step in cell division is ______cytokinesis_____. This is when the new cell membrane forms in both ______animal_____ and _______plant_______ cells. New cell walls form around ________ plant ________ cells only. The ______cytoplasm______ is also divided between the two new cells. Math: For each of the examples below, fill in the correct number of chromosomes. The fruit fly has 8 chromosomes The Ophioglossum reticulatum fern has 1200 chromosomes (highest found) Parent cell Parent cell 8 1200 Parent cell after chromosomes are copied Parent cell after chromosomes are copied 16 2400 Daughter cell Daughter cell Daughter cell Daughter cell 8 8 1200 1200 Identification: Number the following six diagrams of the stages of mitosis in animal cells in the proper order, and then label each stage with the proper name. Use the names below for labeling the accompanied diagrams 1. Interphase 2. Prophase __6____ __1___ ___5___ 3. Prometaphase 4. Metaphase 5. Anaphase 6. Telophase and Cytokinesis __2___ __3____ __4_____ Mitosis and Meiosis Review Part I: Why? 1. List the reasons why a cell would divide by mitosis: e. ______Repair/Replacement______ f. ______Growth/Development__________ g. _____Asexual Reproduction (Binary Fission)_________ h. ______Cell gets too big_____ 2. List the reason why a cell would divide by meiosis: i. _______To create sex cells (Gametes)______ Part II: Where? Use the words in the word bank to fill in the following: Kidney Ovaries (female reproductive organ) Testes (male reproductive organ) Skin 3. Where would mitosis typically occur? j. _________Kidney_______ k. ____________ Skin ______________ 4. Where would meiosis typically occur? l. ______ Ovaries (female reproductive organ) m. ______ Testes (male reproductive organ)_____ Part III: Who? Circle the correct answer. 5. Mitosis creates… n. 2 Identical diploid (2n) cells o. 4 different haploid (n) gametes 6. Meiosis creates… p. 2 Identical diploid (2n) cells q. 4 different haploid (n) gametes Part IV: What? For each of the examples below, fill in the correct number of chromosomes. a. Fruit fly body cell: 8 Chromosomes Mitosis Parent cell 8 Parent cell after chromosomes are copied 16 Daughter cell Daughter cell 8 8 b. Human body cell: 46 Chromosomes Meiosis Parent cell 46 Parent cell after chromosomes are copied 92 Daughter cell I Daughter cell I 46 46 Daughter cell II: gamete Daughter cell II: gamete 23 23 Daughter cell II: gamete Daughter cell II: gamete 23 23 Now reverse them and try Mitosis for humans and Meiosis for alligators!