The Cell Cycle
Here is what we’re going to learn
about.

CELL DIVISION

PARENT CELL
2 DAUGHTER CELLS
The Stages of the Cell Cycle
STAGE 1: Interphase CELL GETS READY
STAGE 2: Mitosis
NUCLEUS DIVIDES
Prophase
Metaphase
Anaph...
Phase 1: Growing
• The cell GROWS to its full size and
produces the structures it needs.
• The cell may make new ribosomes...
INTERPHASE - Growing
• Cell grows to its normal size
• Cell makes a copy of its DNA
(DNA REPLICATION)
• 2 Centrioles are copied to make
a total...
CENTRIOLE
Phase 2: Copying DNA
• The cell makes an exact copy of the DNA
in its nucleus. This process is called DNA
REPLICATION.
• I...
Phase 2: Copying DNA
(occurs inside nucleus)
ORIGINAL
ORIGINAL

COPY
What is Stage 2: Mitosis?
This is the 2nd Stage of the Cell Cycle.
• This is the stage during which the cell’s
nucleus div...
MITOSIS:PROPHASE
• Chromatin shrinks to make
Chromosomes
• Spindle fibers are formed
• Membrane around nucleus
breaks down

MITOSIS: PROPHA...
CHROMOSOME
• Made up of 2 chromatids held together
by a centromere.
• Chromatids are made of DNA.
MITOSIS: METAPHASE
• Chromosomes line up in
middle of cell
• Spindle fibers grab onto
centromeres of chromosomes

MITOSIS: METAPHASE
MITOSIS: ANAPHASE
• Centromeres split
• Spindle fibers pull chromatids
to either side of cell
(CYTOKINESIS BEGINS: cell
stretches out)

MITO...
MITOSIS: TELOPHASE
• Chromosomes stretch out
and begin to turn back into
chromatin
• Nuclei reform
(CYTOKINESIS CONTINUES:
cell pinches in th...
Phase 3: Preparing for Division
• The cell gets ready to divide.
• The cell produces structures that it will use
to divide...
Cytokinesis in an Animal Cell

BEFORE

DURING

AFTER
• Each daughter cell is given
equal organelles and 1
nucleus.
• Cell membrane splits, forming
2 new daughter cells.

ANIMA...
Cytokinesis in Plant Cells
• A cell plate forms in the
middle of the cell.
• The cell plate turns into a cell
membrane that cuts the cell into
2 daug...
How long do the 3 stages take?

HUMAN
LIVER
CELL

HOW
LONG
DOES
THE
WHOLE
THING
TAKE?
The cell cycle presentation teacher version 08
The cell cycle presentation teacher version 08
Upcoming SlideShare
Loading in …5
×

The cell cycle presentation teacher version 08

952 views

Published on

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

  • Be the first to like this

No Downloads
Views
Total views
952
On SlideShare
0
From Embeds
0
Number of Embeds
27
Actions
Shares
0
Downloads
24
Comments
0
Likes
0
Embeds 0
No embeds

No notes for slide

The cell cycle presentation teacher version 08

  1. 1. The Cell Cycle
  2. 2. Here is what we’re going to learn about. CELL DIVISION PARENT CELL 2 DAUGHTER CELLS
  3. 3. The Stages of the Cell Cycle STAGE 1: Interphase CELL GETS READY STAGE 2: Mitosis NUCLEUS DIVIDES Prophase Metaphase Anaphase Telophase CELL MEMBRANE STAGE 3: Cytokinesis DIVIDES
  4. 4. Phase 1: Growing • The cell GROWS to its full size and produces the structures it needs. • The cell may make new ribosomes and enzymes and copies are made of mitochondria. THE CELL LOOKS AND ACTS PRETTY NORMAL IN THIS PHASE
  5. 5. INTERPHASE - Growing
  6. 6. • Cell grows to its normal size • Cell makes a copy of its DNA (DNA REPLICATION) • 2 Centrioles are copied to make a total of 4 INTERPHASE
  7. 7. CENTRIOLE
  8. 8. Phase 2: Copying DNA • The cell makes an exact copy of the DNA in its nucleus. This process is called DNA REPLICATION. • Important step, because the new cells (daughter cells) must have an exact copy of the first cell’s (parent cell) DNA. • After the Copying DNA Phase, 2 identical sets of DNA are in the parent cell.
  9. 9. Phase 2: Copying DNA (occurs inside nucleus) ORIGINAL ORIGINAL COPY
  10. 10. What is Stage 2: Mitosis? This is the 2nd Stage of the Cell Cycle. • This is the stage during which the cell’s nucleus divides into 2 new Nuclei. During mitosis, 1 copy of the parent’s DNA is made for each of the 2 daughter cells. • There are 4 phases in Mitosis: prophase, metaphase, anaphase, and telophase.
  11. 11. MITOSIS:PROPHASE
  12. 12. • Chromatin shrinks to make Chromosomes • Spindle fibers are formed • Membrane around nucleus breaks down MITOSIS: PROPHASE
  13. 13. CHROMOSOME • Made up of 2 chromatids held together by a centromere. • Chromatids are made of DNA.
  14. 14. MITOSIS: METAPHASE
  15. 15. • Chromosomes line up in middle of cell • Spindle fibers grab onto centromeres of chromosomes MITOSIS: METAPHASE
  16. 16. MITOSIS: ANAPHASE
  17. 17. • Centromeres split • Spindle fibers pull chromatids to either side of cell (CYTOKINESIS BEGINS: cell stretches out) MITOSIS: ANAPHASE
  18. 18. MITOSIS: TELOPHASE
  19. 19. • Chromosomes stretch out and begin to turn back into chromatin • Nuclei reform (CYTOKINESIS CONTINUES: cell pinches in the middle) MITOSIS: TELOPHASE
  20. 20. Phase 3: Preparing for Division • The cell gets ready to divide. • The cell produces structures that it will use to divide into new cells. • The cell makes a copy of its 2 centrioles, to now have 4 of them. • Once this step is over, the cell is ready to divide.
  21. 21. Cytokinesis in an Animal Cell BEFORE DURING AFTER
  22. 22. • Each daughter cell is given equal organelles and 1 nucleus. • Cell membrane splits, forming 2 new daughter cells. ANIMAL CELL: CYTOKINESIS
  23. 23. Cytokinesis in Plant Cells
  24. 24. • A cell plate forms in the middle of the cell. • The cell plate turns into a cell membrane that cuts the cell into 2 daughter cells. • New cell walls then form around each of the daughter cells to protect them.. PLANT CELL: CYTOKINESIS
  25. 25. How long do the 3 stages take? HUMAN LIVER CELL HOW LONG DOES THE WHOLE THING TAKE?

×