CELL DIVISION & CELL CYCLE Ms.Tanyaratana Dumkua Biology Department, MahidolWittayanusorn School
http://www.nehirbt.com.tr/wp-content/uploads/hucree.jpg Why do cells divide?
Growth : make an organism larger and more complex Development : cell differentiation Decrease : small size cells Repair : tissues that were damaged Replace : lost/ broken down cells Reproduce : to make more cells or organisms https://www.caricord.com/images/image.jpg
What is happening in divided cell?
Prokaryotic division & Eukaryotic division Differences Chromosome : shape Chromosome : number Nucleus Organelles http://deskarati.com/2012/09/06/what-is-the-difference-between-mitosis-and-binary-fission/
Time = 0 min Time = 18 Hour A Bacteria B C Which flask have increasing cells? Paramecium D https://upload.wikimedia.org/wikipedia/commons/thumb/7/77/conical_flask.svg/2000px-conical_flask.svg.png
Binary Fission : Bacterial Reproduction Why do the new cells look similar? http://res.publicdomainfiles.com/pdf_view/1/13489039218329.jpg http://cdn.biologydiscussion.com/wp-content/uploads/2014/12/clip_image002_thumb100.jpg
Karyokinesis & Cytokinesis http://slideplayer.com/slide/9380130/28/images/3/bacterial+cells+divide+by+binary+fission..jpg https://www2.warwick.ac.uk/fac/sci/chemistry/research/arodgergroup/people/msrgbg/current_research/2.png
1 Origin of Replication 1 Chromosome = 1n (Monoploid) https://image.slidesharecdn.com/52ch11mitosis2008-121101125309-phpapp02/95/52-ch11mitosis2008-42-638.jpg?cb=1351774592
Binary Fission : Protists Reproduction Karyokinesis & Cytokinesis http://www.smartlearning.in/virtual/communityquestions/answers//80921_a.jpeg http://www.studyandscore.com/images_all/1_study%20material/life%20sciences/zoology/protozoa/paramecium_binary_fission.png
Karyokinesis In nucleus : a linear chromosome with many origins of replication http://i68.servimg.com/u/f68/17/30/76/23/replic16.png https://2.bp.blogspot.com/-ygil44flffa/wbthphduv7i/aaaaaaaabo4/xsi82ywpnn0ewke-t_klal2i1pazlffdgclcb/s1600/binary-fission-in-amoeba-and-budding-inyeast.jpg
http://bio1151b.nicerweb.net/locked/media/ch12/12_04chromosomeduplicat.jpg Karyokinesis
How many chromosomes in one nucleus? Most are diploid (2n) but some are not. http://ib.bioninja.com.au/_media/diploid-number_med.jpeg
https://images-na.ssl-images-amazon.com/images/i/41-s8xitikl.jpg https://www.istockphoto.com/th/photo/wheat-gm490861312-75445347?esource=seo_gis_cdn_redirect http://plantbreeding.coe.uga.edu/images/e/e5/table_5_1.jpg
Which kind of this cell? A. Monoploid (n = 6) B. Diploid (2n = 6) C. Triploid (3n = 6)
Which kind of this cell? A. Monoploid (n = 9) B. Diploid (2n = 9) C. Triploid (3n = 9)
Which kind of this cell? A. Monoploid (n = 6) B. Diploid (2n = 6) C. Triploid (3n = 6)
Please draw 3 cells in your paper, First one is monoploid (n = 4), another one is diploid (2n =8), the last one is tetraploid (4n =8).?
Eukaryotic cell has many linear chromosomes, so, the karyokinesis of eukaryote is quite different from prokaryote. Spindle fiber : microtubule : tubulin https://qph.ec.quoracdn.net/main-qimg-b3c5bf276911d82d0853564a48ec1ebf-c https://www2.estrellamountain.edu/faculty/farabee/biobk/spindle.gif
https://image.slidesharecdn.com/12lecturesppt-110928011557-phpapp02/95/cell-cycle-21-728.jpg?cb=1317172683
Cell Cycle https://www.cabarrus.k12.nc.us/cms/lib/nc01910456/centricity/domain/7718/nrm3819-f3.jpg
MITOSIS Nucleolus Centrosome Nuclear membrane Spindle fiber Plasma membrane http://aricsgeneticsstudyguide.weebly.com/uploads/1/3/7/1/13713480/462291423.gif
Cell Cycle Cytokinesis Karyokinesis Interphase Mitotic phase http://images.tutorvista.com/cms/images/123/cell-cycle.jpeg
Interphase http://www.phschool.com/science/biology_place/labbench/lab3/images/interpha.gif https://i.pinimg.com/originals/23/5f/cd/235fcdadbead442269f03f539a475708.jpg https://sites.google.com/site/celldivisionhotran/_/rsrc/1338563425821/regulation-of-cell-cycle/cell_cycle.jpg?height=318&width=320
Interphase https://encrypted-tbn0.gstatic.com/images?q=tbn:and9gcsabvliexzz8kdtycxfmmbxwj2y8ke2y4db6817hjdrjr3xpcj8
Prophase - Chromatin condenses into chromosome (chromosome packing) - Nucleolus disappear - Separation of centrosome - Formation of the mitotic spindle http://www.phschool.com/science/biology_place/labbench/lab3/images/prophase.gif http://www.baileybio.com/plogger/thumbs/lrg-205-prophase_-_animal_cell whitefish_blastula_.jpg
Prophase https://encrypted-tbn0.gstatic.com/images?q=tbn:and9gcqat6zxg0i14vl-78fqpz5it4wwo2mmqrxvjgub19qjvo5l6wgg https://image.slidesharecdn.com/mitosisfinal-120321121814-phpapp02/95/mitosis-final-25-728.jpg?cb=1332335109
Metaphase Chromosomes line up along metaphase plate or equatorial plate (imaginary plane) At late metaphase, centromere divides, preparing to separate chromatids http://www.phschool.com/science/biology_place/labbench/lab3/images/metaphas.gif http://www.baileybio.com/plogger/thumbs/lrg-203-metaphase_-_animal_cell whitefish_blastula_.jpg
Metaphase https://encrypted-tbn0.gstatic.com/images?q=tbn:and9gctc2bdcpuoxn_qkdnnmuyukqrxox8wj1h1tlpzmj3doittnwpcg
Anaphase Chromosomes break at centromeres, and daughter chromosomes (1csister chromatids) move to opposite ends of the cell. http://www.baileybio.com/plogger/thumbs/lrg-199-anaphase_-_animal_cell whitefish_blastula_.jpg http://mitosis3.weebly.com/uploads/1/5/8/9/15891748/2514830.gif?456
Anaphase https://encrypted-tbn0.gstatic.com/images?q=tbn:and9gcrtrbdvmilcdoraxynbizn57erghp_gbly4rqg2sex2wqnlo4am https://encrypted-tbn0.gstatic.com/images?q=tbn:and9gctrlp3rexntn1kfevbwvnxlka_zp_bzcudezkhrc2jkb1iubly_
Telophase & Cytokinesis - Nuclear membrane reforms, nucleoli reappear, chromosome unwind into chromatin - Myosin II and actin filament ring contact to cleavage cell in two. http://www.phschool.com/science/biology_place/labbench/lab3/images/telophas.gif http://www.baileybio.com/plogger/thumbs/lrg-207-telophase_-_animal_cell whitefish_blastula_.jpg
Telophase https://encrypted-tbn0.gstatic.com/images?q=tbn:and9gcr_ql0asp7lvf8d2m8nuy4uxtgii1lfte45y0pe0aqbocyxmzpk
Cytokinesis Cleavage furrow : microfilament Cell plate : pectin and cellulose http://www.zo.utexas.edu/faculty/sjasper/images/12.8.jpg
Please draw 2 cells, one is 2n=4 at metaphase and another one is 2n=6 at anaphase
Amount of DNA in cell cycle 2n=4 https://getrevising.co.uk/https_proxy/10558
http://3ubio.weebly.com/uploads/1/6/8/1/16813674/2068453_orig.jpg MEIOSIS
Stages of Meiosis Meiosis I Meiosis II https://image.slidesharecdn.com/meiosis-100930222452-phpapp02/95/meiosis-2-728.jpg?cb=1285885557
https://pumatrendbio.weebly.com/uploads/6/0/9/7/60977291/398998105.png Meiosis I
Interphase of meiosis I http://www.phschool.com/science/biology_place/biocoach/meiosis/images/meinter.gif
Prophase I https://www.biology.iupui.edu/biocourses/n100h/images/9pro1.gif http://www.phschool.com/science/biology_place/biocoach/meiosis/proi.html
http://www.phschool.com/science/biology_place/biocoach/meiosis/metai.html Metaphase I
http://www.phschool.com/science/biology_place/biocoach/meiosis/anai.html Anaphase I
http://www.phschool.com/science/biology_place/biocoach/meiosis/teloi.html Telophase I
Meiosis II http://cmapspublic3.ihmc.us/servlet/sbreadresourceservlet?rid=1176137458406_809736672_12482
http://www.phschool.com/science/biology_place/biocoach/meiosis/proii.html Prophase II
http://www.phschool.com/science/biology_place/biocoach/meiosis/metaii.html Metaphase II
http://www.phschool.com/science/biology_place/biocoach/meiosis/anaii.html Anaphase II
http://www.phschool.com/science/biology_place/biocoach/meiosis/teloii.html Telophase II
https://i.pinimg.com/736x/47/3c/fa/473cfa8ca680bc84b47e895f6c9e8bef--cell-biology-science-biology.jpg Meiosis I
https://i.pinimg.com/736x/47/3c/fa/473cfa8ca680bc84b47e895f6c9e8bef--cell-biology-science-biology.jpg Meiosis II
Which stages of these cells? B A C D https://quantumartreview.files.wordpress.com/2014/10/0001.jpg
Which stages of these cells? A B C D E https://i.pinimg.com/originals/ae/2a/ac/ae2aacbde4878b4f90dc0133baeecec2.jpg
Gamete formation https://i.ytimg.com/vi/-dlgfd-wpr4/sddefault.jpg http://image.slidesharecdn.com/13meiosisandsexuallifecycles-130311053433-phpapp02/95/13-meiosis-and-sexual-life-cycles-18-638.jpg%3fcb%3d1362980157
https://legacy.owensboro.kctcs.edu/gcaplan/anat2/notes/gametogenesis.jpg
http://eweb.furman.edu/~wworthen/bio111/5meiosis17.jpg
https://www.biology.iupui.edu/biocourses/n100/images/meiosis2cropped.jpg
Crossing over & Gene Segregation http://www.phschool.com/science/biology_place/biocoach/meiosis/geneseg1.html http://www.phschool.com/science/biology_place/biocoach/meiosis/geneseg2.html
Difference between mitosis and meiosis ttps://cdn.thinglink.me/api/image/647554954260643841/1240/10/scaletowidth
http://homepages.gac.edu/~cellab/chpts/chpt11/images/fig11_2.gif Amount of DNA in Cell Cycle