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Download Name Date ______ Per ______ Cell Cycle WS II I. Matching – Each
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Name __________________________________________________________________________ Date __________ Per _________ Cell Cycle WS II I. Matching – Each choice is used one time. A. binary fission _________1. Period of time from the beginning of one cell division to the beginning of the next _________2. End of telophase in which one cell splits into two cells _________3. Describes ability of a cell to differentiate into any type of cell _________4. Area where sister chromatids are attached _________5. Biomolecule used to build cell plate in plant cells _________6. Part of interphase in which DNA replicates; “point of no return” _________7. Genetic make-up of a cell (ex. Humans have 46 chromosomes) _________8. Division of the nucleus _________9. Proteins used to construct spindle fiber network _________10. Only found in animal cells, help with cell division _________11. Proteins that regulate timing of the cell cycle; malfunction may lead to cancer _________12. Pinched in portion of animal cell membrane; seen in telophase _________13. Two identical strands of DNA; DNA that has been replicated _________14. Part of interphase in which a cell is doing its cell job, growing _________15. Network that shortens to pull apart DNA during anaphase _________16. Fine strands of DNA wrapped in protein _________17. Asexual reproduction in prokaryotes _________18. Thickened, condensed form of DNA; visible with compound light microscope _________19. Part of interphase in which centrioles replicate; preparation for cell division _________20. Unspecialized cell capable of infinite reproduction B. cell cycle C. cellulose D. centrioles E. centromere F. chromatin G. chromosome H. cleavage furrow I. cyclins J. cytokinesis K. G1 L. G2 M. genome N. microtubules O. mitosis P. pluripotent Q. S R. sister chromatids S. spindle fibers T. stem cells II. Complete the following concept map of the cell cycle. 1. Put the name of each phase of the cell cycle on the line in the correct circle. (prophase, interphase, telophase, anaphase, metaphase) 2. Then, use the letters below to describe what is happening in each phase of the cycle by writing the correct letter(s) in the circles on the diagram. Each letter is used only one time. A. B. C. D. E. F. G. DNA thickens and condenses chromatids line up at the equator of the cell nucleolus, nuclear envelope disassemble nucleolus, nuclear envelope reassemble sister chromatids pulled apart normal cell activities take place consists of G1, S, and G2 H. two cells form I. DNA replicates J. cytokinesis occurs K. centrioles duplicate L. spindle network fully formed M. centromeres split N. chromosomes uncoil to chromatin ____________ ____________ Mitosis Begins ____________ ____________ ____________ Use the diagram below to answer questions 1-11. 1. 2. 3. 4. 5. 6. 7. 8. 9. Sequence the pictures above in the correct order beginning with interphase: ____________________________________________ Which phase above illustrates sister chromatids detaching at their centromeres? ________ Name the phase __________________ Which phase above illustrates the formation of two new nuclei? _________ Name the phase _______________________________ Which phase above illustrates sub-cellular organelles replicating in preparation for cell division? _________________ Name the phase _______________________ Which phase above would Synthesis have just occurred in? ________ What phase is this? ________________________________ Which phase above represents the shortest phase of mitosis? _______ What is the name of this phase? _____________________ Which phase above is the longest phase of the cell cycle? ________ What is the name of this phase? _______________________ What phase above is the longest phase of mitosis? ________ What is the name of this phase? _____________________________ What phase is NOT part of mitosis? __________ What is the name of this phase? _______________________________________ 10. What phase has sister chromatids aligning on the equator of the cell? ________ Name of this phase? ________________________ 11. What phase has DNA thicken, coil, and condense into visible sister chromatids? ______Name this phase. ____________________ ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------12. In order for the kinetochore microtubules to interact with the DNA in prophase, what must happen to the nuclear envelope? How does this happen? ______________________________________________________________________________________ 13. Name all the words that we have used in this unit that could refer to the DNA of an organism. _____________________________ ________________________________________________________________________________________________________ 14. Beginning with metaphase, sequence the steps of the cell cycle…____________________________________________________ 15. Describe the DNA content of the daughter cells in relationship to the original cell (in terms of number of chromosomes and amount of DNA). _________________________________________________________________________________________________ 16. Describe cytokinesis in a plant cell: ____________________________________________________________________________ _________________________________________________________________________________________________________ 17. Describe cytokinesis in an animal cell: __________________________________________________________________________ _________________________________________________________________________________________________________ 18. How are cancer cells different from normal cells? _________________________________________________________________ 19. What is the name of the proteins that regulate the timing of the cell cycle? ____________________________________________ 20. Cells that have more DNA in them take longer to complete the S phase of the cell cycle. What occurs during S and why would it take longer to complete this phase? ___________________________________________________________________________ 21. What process do bacteria use to divide? _________________________________ What is the benefit of this type of asexual reproduction for them? ______________________________________________________________________________________. 22. What is the word for identical genetic information held together at their centromere? ______________________________________ 23. What phase of the cell cycle would shortening of the microtubules occur? _____________________________________________ 24. What phase of the cell cycle would lengthening of the microtubules occur? ____________________________________________ 25. If a cell passes the “point of no return” checkpoint in G1, what will happen next? _______________________________________ 26. What is the name of the protein disk that holds sister chromatids together and serves as a place for kinetochore microtubules to attach? ______________________________
