1. Wed 11/21 Chp.6&7 Test After: Chp.8 Title Page
HW: Chp.8 Guided reading
DUE MONDAY

2. Title page-pg.45
Ch 8 title page

3. Pg Chp.8 Guided Reading

4. Mon 11/26 Grades posted Thursday  go to computer lab rm.317
Includes Test & INB Check
Any questions/problems with INB Check see me after notes today
Thursday  go to computer lab rm.317

5. Objective
Describe the phases of the cell cycle

6. In: Pg.48 1. Chromosome model Draw the model chromosome on your paper
Label the following on your diagram— chromosome, chromatids, centromere
2. Why does the chromosome look so bumpy? Ch r
omo S
ome
Centromere
Chromatids

7. Why do you think a chromosome looks so bumpy?

8. Chromosomes Rod-like structures made of Each half called a chromatid
DNA
Proteins called histones which help shape and pack DNA
Each half called a chromatid
Duplicate before cell division
Two identical parts
Centromere holds them together

9. Pg.49 Set up Cornell Notes-Title: Chp.8 Cell Reproduction

10. Chromosomes Rod-like structures made of Each half called a chromatid
DNA
Proteins called histones which help shape and pack DNA
Each half called a chromatid
Duplicate before cell division
Two identical parts
Centromere holds them together

11. Chromosome Number Varies with species Some have same number
Carrot and lettuce = 18
Potatoes, Plums, Chimpanzees and Gorillas =48

12. Chromosome Number Diploid (2n) = normal cell
Haploid (1n) = dividing cell

13. Chromosome Differences
Prokaryote:
Most only contain one Chromosome
Attached to inside of the cell membrane
Circular DNA
Eukaryote:
Many Chromosomes
Found inside nucleus
Compacted to fit inside the nucleus

14. How do cells reproduce?
Cell division is the process in which cells reproduce themselves.
Cell cycle is the stages a cell goes through to make more cells.

15. S=Synthesis G1 (growth;Gap 1) G2=Gap 2 11 hrs. 7 hrs. 3 hrs. 1 hr.
Cytokinesis
M phase
Rapid cell growth
Cell doubles in size
Enzymes + organelles double in number
Growth
DNA makes a copy of itself
11 hrs.
7 hrs.
Rapid Growth
Final preparation for cell division
3 hrs.
Interphase

16. Cell Division in Prokaryotes
Binary Fission
Two identical cells produced from one cell
Asexual reproduction
Only 1 parent
No genetic diversity

17. Two Types of Cell Division in Eukaryotes(m phase of cell cycle)
Mitosis:
Occurs in organisms undergoing:
Growth, development, repair or asexual reproduction
Creates identical cells(2n)
Meiosis:
Necessary for sexual reproduction - creates genetic diversity
Formation of gametes
Egg (1n)
Sperm (1n)

18. Finish Cornell Notes
Write 3 questions
Write 3-sentence summary

19. Pg.50-51 Chp.8 3-Column Vocab Chromosome 9. Mitosis Histone
Chromatid
Centromere
Homologous chromosomes
Diploid
Haploid
8. Binary fission
9. Mitosis
10. Meiosis
11. Gametes
12. Crossing over
13. Interphase
14. Cytokinesis
15. Asexual reproduction
16. Sexual reproduction

20. Out
How is the cell cycle like a human life cycle?

21. Tues 11/27

22. Describe the phases of the cell cycle.

23. In: pg.52
Write down 5 facts as you watch the Cell Division & Mitosis video clip 1. 2. 3. 4. 5.

24. Pg.53 – Set up Cornell Notes
Title: Mitosis

25. Mitosis: Occurs in all living things
Division in body cells (all cells that are not gametes).
It creates 2 identical daughter cells.
Replaces old cells, growth, reproduction of single celled organisms
Starts as soon as the egg is fertilized and ends at death.
Has 4 stages:
prophase, metaphase, anaphase & telophase.

26. Stages of Mitosis 1. Prophase Chromatin coils Nucleus disappears
Centrosomes move to poles
Animal contain centrioles
Plant cells lack centrioles
Spindle fibers form mitotic spindle
Two types
Kinetochore fibers attach to centromere
Polar fibers stretch from centriole to centriole

27. Stages of Mitosis cont. 2. Metaphase:
Kinetochore fibers move chromosomes
To equator or middle
Karyotypes made using this phase

28. Stages of Mitosis cont. 3. Anaphase: Centromere splits
Sister Chromatids pulled to opposite ends
These are now individual chromsomes

29. Stages of Mitosis cont. 4. Telophase:
Chromatids unwind and elongate to form chromatin
Centrioles and spindle fibers disappear
Nucleous and Nucleus reappear

30. Stages of Mitosis cont. After  Cytokinesis Division into two cells
Animal cells
Pinch forming cleavage furrows
Plant cells
Golgi Bodies join in middle to form
Cell plate which will develop into cell wall

31. Finish Cornell Notes
Write 3 questions
Write 3-sentence summary

32. Animation
Mitosis Visual

33. Mitosis Practice Pg.55 Pg.54 Mitosis Event Organizer
Mitosis CLOZE passage

34. WHO?
WHY?
MITOSIS
WHEN?
EVENT
HOW?
WHERE?
SIGNIFICANCE?

35. Homework
Finish Mitosis CLOZE & event map

36. OUT Draw the cell in interphase. Label the following: Nuclear envelope
Cell membrane
Nucleus
Chromatin-this is the DNA when it is all tangled up (before it condenses
into chromosomes).
5. Centrosomes-the green things
Question:
What is Chromatin?

37. Wed 11/28
Period 1  meet in computer lab 317 tomorrow

38. Objective
Describe the phases of the cell cycle

40. In: pg.56 3+ sentences Explain the cartoon from the previous slide.
(Relate it to what you know about mitosis)
3+ sentences

41. Review Mitosis – Video Clip & Animation
Mitosis Visual

42. Pg.57 - Stages of Mitosis Model
Use the contents of the bag to model what is happening to chromosomes during interphase and the 4 stages of mitosis.
Practice each stage until you have it memorized…each person will be given a stage to demonstrate for points.
Analysis Questions:
In this activity, what represented:
Replicated chromosomes
Sister chromatids
Nuclear envelope
Spindle fibers
Centrioles
How many chromosomes did the parent cell have? Each daughter cell?
What was the diploid # for the cell?
What was the haploid # for the cell?
How is mitosis able to make 2 diploid cells from 1 diploid cell?

43. Out What is cytokinesis?
How would cytokinesis differ between plant and animal cells?

44. Thursday 11/29
Computer Lab today

45. Objective
Describe the phases of the cell cycle.

46. In: pg.58
About how long does it take a cell to go thru the cell cycle?
What stage does the cell spend the most time in?
G1 =Gap 1
S=Synthesis
G2=Gap 2
1 hr.
Cytokinesis
M phase
Rapid cell growth
Cell doubles in size
Enzymes + organelles double in number
Growth
DNA makes a copy of itself
11 hrs.
7 hrs.
Rapid Growth
Final preparation for cell division
3 hrs.
Interphase

47. Pg.59 - The Cell Cycle and Time
Go to the following website
Fill out the data sheet and complete graph and questions and glue in lab sheet as a flip up.

48. Homework
Finish the lab sheet.

49. Out
What would happen to an organism if its cells couldn’t leave interphase and undergo mitosis?

50. Friday 11/30
INB Quiz 4  get out half sheet. #1-10

51. Objective
Discuss specific examples of disruptions of homeostasis.

52. In: pg.60 Cancer cells are different from normal cells because they…..
Watch the movie clip and finish the following sentences:
Cancer cells are different from normal cells because they…..
A tumor is…
A tumor is harmful because it…
Cancer is caused by…
Cancer can be treated by…

53. Pg 60 Watch the movie clip and finish the following sentences:
Cancer cells are different from normal cells because they…..
A tumor is…
A tumor is harmful because it…
Cancer is caused by…
Cancer can be treated by…

54. Pg.61- Controlling the Cell Cycle
What does a regulatory gene do?
What is cancer caused by?
What is a mutation?
What is a tumor?
What are carcinogens?
Why is it difficult for scientists to study the effects of exposure to carcinogens in humans?
Why is smoking dangerous?
Why should you wear sunscreen?
What are 3 treatments for cancer?
Immunotherapy is an experimental technique for treating cancer. In this technique, the body’s immune system is boosted so that it can destroy cancerous cells. What is a possible advantage that immunotherapy may have over chemotherapy?

55. Homework
Finish Cell cycle questions

56. Out What are the 3 stages of interphase?
Some cells go into the Go phase, what does this mean?
What kinds of cells go into Go?

57. Mon 12/3
INB Check & Chp.8 Test is FRIDAY!!!

58. Objective
Distinguish among the major events in meiosis I and meiosis II.

59. In: pg.62 What is the diploid # of this organism?
A scientist takes a skin cell from a new organism she discovered. After karyotyping, the skin cell is found to have 84 chromosomes.
What is the diploid # of this organism?
What is the haploid # of this organism?
How did you decide your answers for #1 and 2?

60. What is the 2n for humans? What is the 1n for humans?
Diploid=2n=the number of chromosomes found in a normal body cell.
Haploid=1n=half the diploid #. This is the number of chromosomes found in a gamete.
What is the 2n for humans?
What is the 1n for humans?

61. Cornell Notes: Meiosis
Pg.63
Cornell Notes: Meiosis

62. Human Chromosomes 46 or 23 pairs Autosomes = 44 Sex Chromosomes = 2
Pair of autosomes called
Homologous chromosomes or homologues
Same size and shape
Different from other pairs
Have same gene locations
Karyotype
Photomicrograph of chromosomes dividing in normal cell
Spectral Karyotyping

64. Meiosis Forms 4 haploid daughter cells Forms gametes-egg and sperm.
Reduction division—1/2 the DNA of the parent cell.
Cells divide twice—meiosis I and meiosis II.
Occurs in reproductive organs.
Occurs only during the reproductive years of the individual.
Allows for the creation of genetically unique cells.

65. Crossing-Over

66. Meiosis I

67. Meiosis II

68. Finish Cornell Notes
3 Questions
3-sentence summary

69. Meiosis Practice Pg.65 Pg.64 Meiosis Event Organizer
Meiosis CLOZE passage
Use your notes, Event Map, and book pg.161

70. WHO?
WHY?
WHEN?
EVENT
HOW?
MEIOSIS
WHERE?
SIGNIFICANCE?

71. Homework
Meiosis CLOZE passage

72. Out
Why is meiosis referred to as a “reduction division”?