the cell is going to divide!!??
DESCRIPTION
The cell is going to divide!!??. www.bioweb.uncc.edu/biol1110/stages.htm www.biology.arizona.edu/cell_bio/tutorials/cell_cycle/cells1.html science.nhmccd.edu/biol/mitosis/pmitosis.html. Levels of Organization. Cell (animal or plant; Body or sex cell) - PowerPoint PPT PresentationTRANSCRIPT
![Page 1: The cell is going to divide!!??](https://reader035.vdocument.in/reader035/viewer/2022062422/56813460550346895d9b462a/html5/thumbnails/1.jpg)
The cell is going to divide!!??
![Page 2: The cell is going to divide!!??](https://reader035.vdocument.in/reader035/viewer/2022062422/56813460550346895d9b462a/html5/thumbnails/2.jpg)
www.bioweb.uncc.edu/biol1110/stages.htmwww.biology.arizona.edu/cell_bio/tutorials/cell_cycle/cells1.htmlscience.nhmccd.edu/biol/mitosis/pmitosis.html
![Page 3: The cell is going to divide!!??](https://reader035.vdocument.in/reader035/viewer/2022062422/56813460550346895d9b462a/html5/thumbnails/3.jpg)
Levels of Organization
Cell (animal or plant; Body or sex cell)
Nucleus (Contains chromosomes)
Chromosomes (divide during cell division)
Gene (Segment of Chromosome)
DNA (Contains genetic information)
![Page 4: The cell is going to divide!!??](https://reader035.vdocument.in/reader035/viewer/2022062422/56813460550346895d9b462a/html5/thumbnails/4.jpg)
![Page 5: The cell is going to divide!!??](https://reader035.vdocument.in/reader035/viewer/2022062422/56813460550346895d9b462a/html5/thumbnails/5.jpg)
Vocabulary Gamete: sex cells= sperm or
egg Fusion of gametes forms a
zygote. A zygote always has a full or
diploid (2n) number of chromosomes
![Page 6: The cell is going to divide!!??](https://reader035.vdocument.in/reader035/viewer/2022062422/56813460550346895d9b462a/html5/thumbnails/6.jpg)
Each species has a characteristic number of chromosomes.
Diploid (2n) number includes two sets of chromosomes of each type.
Found in all the non-sex cells or autosomes of an organism's body (with a few exceptions).
Examples include humans (46), crayfish (200), etc.
Haploid (n) number contains one of each kind of chromosome.
In the life cycle of many animals, only sperm and egg cells(sex cells) have the haploid number.
Examples include humans (23), crayfish (100), etc.
![Page 7: The cell is going to divide!!??](https://reader035.vdocument.in/reader035/viewer/2022062422/56813460550346895d9b462a/html5/thumbnails/7.jpg)
Types of Chromosomes:
Autosomes = Body chromosomes or non sex chromosomes ( humans have 44 or 22 pairs)
Sex Chromosomes = XX or XY (23rd pair for humans) determines the sex of the offspring
![Page 8: The cell is going to divide!!??](https://reader035.vdocument.in/reader035/viewer/2022062422/56813460550346895d9b462a/html5/thumbnails/8.jpg)
![Page 9: The cell is going to divide!!??](https://reader035.vdocument.in/reader035/viewer/2022062422/56813460550346895d9b462a/html5/thumbnails/9.jpg)
Mitosis:the division of body cells
Daughter cell
46 chromosomes
Parent cell
46 chromosomes
Daughter cell
46 chromosomes
**Daughter cells are identical to Parent cell
![Page 10: The cell is going to divide!!??](https://reader035.vdocument.in/reader035/viewer/2022062422/56813460550346895d9b462a/html5/thumbnails/10.jpg)
![Page 11: The cell is going to divide!!??](https://reader035.vdocument.in/reader035/viewer/2022062422/56813460550346895d9b462a/html5/thumbnails/11.jpg)
Remember Cell size?
1cm
If your cellsWere this size Then
![Page 12: The cell is going to divide!!??](https://reader035.vdocument.in/reader035/viewer/2022062422/56813460550346895d9b462a/html5/thumbnails/12.jpg)
The Cell Cycle
![Page 13: The cell is going to divide!!??](https://reader035.vdocument.in/reader035/viewer/2022062422/56813460550346895d9b462a/html5/thumbnails/13.jpg)
THE CELL CYCLE
*Interphase
*Mitosis
*Cytokinesis
![Page 14: The cell is going to divide!!??](https://reader035.vdocument.in/reader035/viewer/2022062422/56813460550346895d9b462a/html5/thumbnails/14.jpg)
Interphase*Time in between cell division (mitosis)G1= Cell growthS = DNA ReplicationG2 = Prep for mitosis
![Page 15: The cell is going to divide!!??](https://reader035.vdocument.in/reader035/viewer/2022062422/56813460550346895d9b462a/html5/thumbnails/15.jpg)
Prophase
1. Chromosomes appear condensed
2. Nuclear envelope and nucleus disappears
3. Centrioles separate to the poles of the cell
4. Chromosome (at their centromeres)attach to spindle fibers
Centromeres produce spindle fibers
![Page 16: The cell is going to divide!!??](https://reader035.vdocument.in/reader035/viewer/2022062422/56813460550346895d9b462a/html5/thumbnails/16.jpg)
![Page 17: The cell is going to divide!!??](https://reader035.vdocument.in/reader035/viewer/2022062422/56813460550346895d9b462a/html5/thumbnails/17.jpg)
Metaphase
1. Chromosomes line up in the equator (center) of the cell.
(Spindle fibers help move chromosomes thru cell)
![Page 18: The cell is going to divide!!??](https://reader035.vdocument.in/reader035/viewer/2022062422/56813460550346895d9b462a/html5/thumbnails/18.jpg)
![Page 19: The cell is going to divide!!??](https://reader035.vdocument.in/reader035/viewer/2022062422/56813460550346895d9b462a/html5/thumbnails/19.jpg)
Anaphase
1. The centromere splits and chromatids separate.
2. Chromatids move to the poles of the cell
![Page 20: The cell is going to divide!!??](https://reader035.vdocument.in/reader035/viewer/2022062422/56813460550346895d9b462a/html5/thumbnails/20.jpg)
![Page 21: The cell is going to divide!!??](https://reader035.vdocument.in/reader035/viewer/2022062422/56813460550346895d9b462a/html5/thumbnails/21.jpg)
Telophase
1. Chromatids start to become diffuse (chromatin)
2. The nuclear envelope starts to reform
3. Nucleolus reforms4. Spindle breaks apart5. Cells begins splitting
![Page 22: The cell is going to divide!!??](https://reader035.vdocument.in/reader035/viewer/2022062422/56813460550346895d9b462a/html5/thumbnails/22.jpg)
![Page 23: The cell is going to divide!!??](https://reader035.vdocument.in/reader035/viewer/2022062422/56813460550346895d9b462a/html5/thumbnails/23.jpg)
Cytokinesis* NOT a phase of mitosis• It is a process of the cytoplasm dividing
after mitosis.
![Page 24: The cell is going to divide!!??](https://reader035.vdocument.in/reader035/viewer/2022062422/56813460550346895d9b462a/html5/thumbnails/24.jpg)
![Page 25: The cell is going to divide!!??](https://reader035.vdocument.in/reader035/viewer/2022062422/56813460550346895d9b462a/html5/thumbnails/25.jpg)
![Page 26: The cell is going to divide!!??](https://reader035.vdocument.in/reader035/viewer/2022062422/56813460550346895d9b462a/html5/thumbnails/26.jpg)
Interphase
*2 new cells are formed*Identical to the original parent cell
![Page 27: The cell is going to divide!!??](https://reader035.vdocument.in/reader035/viewer/2022062422/56813460550346895d9b462a/html5/thumbnails/27.jpg)
THE CELL CYCLE
*Interphase
*Mitosis
*Cytokinesis
![Page 28: The cell is going to divide!!??](https://reader035.vdocument.in/reader035/viewer/2022062422/56813460550346895d9b462a/html5/thumbnails/28.jpg)
Plant Mitosis
Onion Root Tip
Cells
![Page 29: The cell is going to divide!!??](https://reader035.vdocument.in/reader035/viewer/2022062422/56813460550346895d9b462a/html5/thumbnails/29.jpg)
![Page 30: The cell is going to divide!!??](https://reader035.vdocument.in/reader035/viewer/2022062422/56813460550346895d9b462a/html5/thumbnails/30.jpg)
![Page 31: The cell is going to divide!!??](https://reader035.vdocument.in/reader035/viewer/2022062422/56813460550346895d9b462a/html5/thumbnails/31.jpg)
![Page 32: The cell is going to divide!!??](https://reader035.vdocument.in/reader035/viewer/2022062422/56813460550346895d9b462a/html5/thumbnails/32.jpg)
![Page 33: The cell is going to divide!!??](https://reader035.vdocument.in/reader035/viewer/2022062422/56813460550346895d9b462a/html5/thumbnails/33.jpg)
![Page 34: The cell is going to divide!!??](https://reader035.vdocument.in/reader035/viewer/2022062422/56813460550346895d9b462a/html5/thumbnails/34.jpg)
![Page 35: The cell is going to divide!!??](https://reader035.vdocument.in/reader035/viewer/2022062422/56813460550346895d9b462a/html5/thumbnails/35.jpg)
![Page 36: The cell is going to divide!!??](https://reader035.vdocument.in/reader035/viewer/2022062422/56813460550346895d9b462a/html5/thumbnails/36.jpg)
![Page 37: The cell is going to divide!!??](https://reader035.vdocument.in/reader035/viewer/2022062422/56813460550346895d9b462a/html5/thumbnails/37.jpg)
![Page 38: The cell is going to divide!!??](https://reader035.vdocument.in/reader035/viewer/2022062422/56813460550346895d9b462a/html5/thumbnails/38.jpg)
![Page 39: The cell is going to divide!!??](https://reader035.vdocument.in/reader035/viewer/2022062422/56813460550346895d9b462a/html5/thumbnails/39.jpg)
![Page 40: The cell is going to divide!!??](https://reader035.vdocument.in/reader035/viewer/2022062422/56813460550346895d9b462a/html5/thumbnails/40.jpg)
The Cell Cycle
![Page 41: The cell is going to divide!!??](https://reader035.vdocument.in/reader035/viewer/2022062422/56813460550346895d9b462a/html5/thumbnails/41.jpg)
Cell Division: Prokaryotes
The Prokaryotic Chromosome Chromosome consists of nucleoid
(an irregularly-shaped region, electron-dense, and not enclosed by a membrane.
Chromosome, when stretched out, is a circular loop attached to the inside of the plasma membrane; about 1,000 times the length of the cell.
![Page 42: The cell is going to divide!!??](https://reader035.vdocument.in/reader035/viewer/2022062422/56813460550346895d9b462a/html5/thumbnails/42.jpg)
3. When cell is approximately twice its original length, the plasma membrane grows inward, a new cell wall forms dividing the cell into two approximately equal daughter cells.4. Generation times of Escherichia coli is 20 minutes; most bacteria need up to one hour to a day.
![Page 43: The cell is going to divide!!??](https://reader035.vdocument.in/reader035/viewer/2022062422/56813460550346895d9b462a/html5/thumbnails/43.jpg)