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Asexual Reproduction. Mitosis. Mitosis is the process in which the cells divides to form two cells. Why do you think cells must divide?. 1. Ready?. Begin!. 3:00. Mitosis is the process in which the cells divides to form two cells. Why do you think cells must divide?. 2:00.

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slide1

Asexual Reproduction

Mitosis

Mitosis is the process in which the cells divides to form two cells. Why do you think cells must divide?

1

ready

Ready?

Begin!

slide3

3:00

Mitosis is the process in which the cells divides to form two cells. Why do you think cells must divide?

slide4

2:00

Mitosis is the process in which the cells divides to form two cells. Why do you think cells must divide?

slide5

1:00

Mitosis is the process in which the cells divides to form two cells. Why do you think cells must divide?

slide7

Asexual Reproduction

Mitosis

Mitosis is the process in which the cells divides to form two cells. Why do you think cells must divide?

ANALYZE

(break apart, study the pieces)

There is a question within a question in this DSQ. Can you identify the question within the DSQ?

7

daily notes
Daily Notes
  • What are the reasons cells divide?
three reasons why cells reproduce by mitosis 1 growth 2 repair 3 replacement
Three reasons why cells reproduce by mitosis: 1. Growth 2. Repair 3. Replacement

Skin cancer - the abnormal growth of skin cells - most often develops on skin exposed to the sun.

Cell that reproduce by asexual reproduction reproduce constantly.

goal for today identify the stages in meiosis
Goal for today: Identify the stages in meiosis
  • Did you meet your goal today?
    • 4 I can teach the steps of meiosis to someone else
    • 3 I can explain the steps but don’t understand what they mean
    • 2 I can remember most of the steps
    • 1 If someone give me hints I can explain some of the steps of mitosis
    • 0 I have no idea what you’re talking about
slide14

Animated Mitosis Cycle

http://www.cellsalive.com/mitosis.htm

  • Interphase
  • Prophase
  • Metaphase
  • Anaphase
  • Telophase & Cytokinesis
interphase occurs before mitosis begins
Interphaseoccurs before mitosis begins
  • Chromosomes are copied (# doubles)
  • Chromosomes appear as threadlike coils (chromatin) at the start, but each chromosome and its copy(sister chromosome) change to sister chromatids at end of this phase

CELL MEMBRANE

Nucleus

Cytoplasm

interphase
Interphase

Plant Cell

Animal Cell

Photographs from: http://www.bioweb.uncc.edu/biol1110/Stages.htm

prophase 1 st step in mitosis
Prophase 1st step in Mitosis
  • Mitosis begins (cell begins to divide)
  • CentriolesChromatins are visible

Centrioles

Sister chromatids

Spindle fibers

prophase
Prophase

Plant Cell

Animal Cell

Spindle fibers

Centrioles

Photographs from: http://www.bioweb.uncc.edu/biol1110/Stages.htm

metaphase 2 nd step in mitosis
Metaphase 2nd step in Mitosis
  • Chromatids (or pairs of chromosomes) attach to the spindle fibers.

Centrioles

Spindle fibers

metaphase
Metaphase

Plant Cell

Animal Cell

Photographs from: http://www.bioweb.uncc.edu/biol1110/Stages.htm

anaphase 3 rd step in mitosis
Anaphase 3rdstep in Mitosis
  • Chromatids (or pairs of chromosomes) separate and begin to move to opposite ends of the cell.

Centrioles

Spindle fibers

anaphase
Anaphase

Plant Cell

Animal Cell

Photographs from: http://www.bioweb.uncc.edu/biol1110/Stages.htm

telophase 4th s tep in mitosis
Telophase4th step in Mitosis
  • Two new nuclei form.
  • Chromosomes appear as chromatin (threads rather than rods).
  • Mitosis ends.

Nuclei

Nuclei

Chromatin

telophase
Telophase

Plant Cell

Animal Cell

Photographs from: http://www.bioweb.uncc.edu/biol1110/Stages.htm

cytokinesis occurs after mitosis
Cytokinesisoccurs after mitosis
  • Cell membrane moves inward to create two daughter cells – each with its own nucleus with identical chromosomes.
look up your vocab
Look up your Vocab!
  • Mitosis- page 95
  • DNA- page 93
  • Interphase- page 94
  • Cytokinesis - page 95
  • Cell Cycle- page 94
  • Chromosomes- page 93
  • Mieosis
  • Haploid vs diploid
daily notes1
Daily Notes
  • Why must cells divide in mitosis?
  • 1. Growth2. Repair3. Replacement
  • 4. Reproduction
mitosis animation
MitosisAnimation

http://www.cellsalive.com/mitosis.htm

slide35

the process of nuclear division where the number of the chromosomes is halved.

produces four daughter cells

all daughter cells are haploid

chromosomes are shuffled in the process, so that each daughter cell has a unique combination

used to create gametes (sperm and egg)

slide36

Mitosis creates diploids (full set of chromosomes)

  • Meiosis creates haploids(half # of chromosomes)
goal for today identify the stages in meiosis1
Goal for today: Identify the stages in meiosis
  • Did you meet your goal today?
    • 4 I can teach the steps of meiosis to someone else
    • 3 I can explain the steps but don’t understand what they mean
    • 2 I can remember most of the steps
    • 1 If someone give me hints I can explain some of the steps of meiosis
    • 0 I have no idea what you’re talking about
slide38

Asexual Reproduction

Mitosis

Meiosisis the process in which sex cells divides twiceto form 4(not 2) sex cells with half the chromosomes. Why do you think cells must divide with only half of the chromosomes?

39

ready1

Ready?

Begin!

slide40

3:00

Meiosis is the process in which sex cells divides twice to form 4(not 2) sex cells with half the chromosomes. Why do you think cells must divide with only half of the chromosomes?

slide41

2:00

Meiosis is the process in which sex cells divides twice to form 4(not 2) sex cells with half the chromosomes. Why do you think cells must divide with only half of the chromosomes?

slide42

1:00

Meiosis is the process in which sex cells divides twice to form 4(not 2) sex cells with half the chromosomes. Why do you think cells must divide with only half of the chromosomes?

slide44

Asexual Reproduction

Meiosis is the process in which sex cells divides twice to form 4(not 2) sex cells with half the chromosomes. Why do you think cells must divide with only half of the chromosomes?

Half from mom half from dad! When they join together they form a whole baby!

Mitosis

45

this is not a quiz

THIS IS NOT A QUIZ

1)What are the two ways cells divide?

2) What cell division occurs only in sex cells?

3) What phase in the cell cycle is the most common?

4)Explain the difference between mitosis and meiosis using at least 3 examples

this is not a quiz1

THIS IS NOT A QUIZ

1)What are the two ways cells divide?

2) How many cells are created in mitosis

3) How many cells are created in meiosis

4) What cell division occurs only in sex cells?

daily notes2

Daily Notes

Compare and contrast meiosis and mitosis. Page 106

vocab page
Vocab page
  • Gamete
  • Zygote
  • Diploid
  • Haploid
  • Meiosis
cell division
Cell Division

What is the purpose?

What is the purpose?

Stages of _______________

Include images

Stages of _______________

Include images

ticket out of the door

Ticket out of the door

Explain the main phases of mitosis.

What phase does the cell begin to divide?

What are the reasons cells divide?

goal for today compare and contract mitosis vs meiosis
Goal for today: Compare and Contract mitosis vs meiosis
  • Did you meet your goal today?
    • 4 I can teach the differences of mitosis and meiosis to someone else
    • 3 I can explain the differenncesbut don’t understand what they mean
    • 2 I can remember one of the cell division proceses
    • 1 If someone give me hints I can explain some of the steps of mitosis
    • 0 I have no idea what you’re talking about
did you meet your goal

Did you meet your goal?

Compare and contrast mitosis and meiosis