Your SlideShare is downloading. ×
BIO3Lec1 Cell Cycle
BIO3Lec1 Cell Cycle
BIO3Lec1 Cell Cycle
BIO3Lec1 Cell Cycle
BIO3Lec1 Cell Cycle
BIO3Lec1 Cell Cycle
BIO3Lec1 Cell Cycle
BIO3Lec1 Cell Cycle
BIO3Lec1 Cell Cycle
BIO3Lec1 Cell Cycle
BIO3Lec1 Cell Cycle
BIO3Lec1 Cell Cycle
BIO3Lec1 Cell Cycle
BIO3Lec1 Cell Cycle
BIO3Lec1 Cell Cycle
BIO3Lec1 Cell Cycle
BIO3Lec1 Cell Cycle
Upcoming SlideShare
Loading in...5
×

Thanks for flagging this SlideShare!

Oops! An error has occurred.

×
Saving this for later? Get the SlideShare app to save on your phone or tablet. Read anywhere, anytime – even offline.
Text the download link to your phone
Standard text messaging rates apply

BIO3Lec1 Cell Cycle

960

Published on

Published in: Education, Technology
0 Comments
0 Likes
Statistics
Notes
  • Be the first to comment

  • Be the first to like this

No Downloads
Views
Total Views
960
On Slideshare
0
From Embeds
0
Number of Embeds
3
Actions
Shares
0
Downloads
74
Comments
0
Likes
0
Embeds 0
No embeds

Report content
Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

Cancel
No notes for slide

Transcript

  • 1. Cell cycle Biology 3 Kawashima Philippine Science High School SY 2009-2010
  • 2. Roles of Cell Division Reproduction Growth and Development Renewal and Repair
  • 3. What happens in cell division? Duplication Cell growth of genetic Fission material
  • 4. 90% of the cell Cell growth cycle Interphase Checkpoints for DNA synthesis cell division
  • 5. Interphase Mitotic Phase G1 Prophase Metaphase S Anaphase G2 Telophase
  • 6. Genome Chromosome Chromatin • All genetic • Condensed • Uncondensed information DNA state of DNA packaging molecule • Single DNA molecule
  • 7. Chromatin condenses during prophase • Nucleoli disappear • Duplicated chromosomes appear as sister chromatids joined at the centromere • Microtubules begin to extend from the centrosome • Lengthening of microtubules propel centrosomes to move away from each other
  • 8. Sister chromatids organize during prometaphase • Nuclear envelope fragments • Sister chromatids develop a kinetochore – a protein structure found at the centromere • Microtubules interact with sister chromatids at their kinetochores
  • 9. Sister chromatids align at the metaphase plate during metaphase • Metaphase plate an imaginary plane equidistant between the poles • Centrosomes now at opposite ends of the cell • Each chromosome has numerous kinetochore microtubules attached • Longest stage of mitosis
  • 10. Sister chromatids separate during anaphase • Liberated chromosomes move towards the poles through “walking” centromere region first • Nonkinetochore microtubules lengthen elongating the cell
  • 11. Chromosomes become less condensed during telophase • Two daughter nuclei form • Nuclear envelop reforms, arising from the endomembrane system • Division of one nucleus into two genetically identical nuclei – mitosis – is now complete
  • 12. Cytokenesis is the division of the cytoplasm • Cytokenesis begins in telophase • In animals, formation of cleavage furrow “pinches” the cell into two • In plants, a cell plate forms to divide the cytoplasm into distinct cells
  • 13. Read on Cell Cycle Checkpoints and Cancer

×