1. Mitosis, Part 1  Catalyst  What are the six characteristics of life? Describe each of them in your own words.  Which characteristics deal with making babies and getting bigger?  Clean out your group folder. FIRST FIVE! Complete sentences!

2. Agenda  Catalyst  PAUSE – We need to talk.  Catalyst Review  Mitosis, Part 1  Guided practice  Independent practice  Exit Question

3. Where are we at? PERIOD 1PERIOD 3PERIOD 4 TEST GRADE RANGE 22 – 9938 – 8626 – 95 CLASS AVERAGE 6663.761.8 LABS RECEIVED 14 out of 30 (47%) 24 out of 31 (68%) 11 out of 28 (39%)

4. The Cell MASTERS (>85%)  Brandy Jordan  (A-Team)  Constance Williams  (A-Team)  Michael Bartholomew  Alexis Gordon  Jose Caraval  (A-Team) Almost there: (>80%)  Jimmy Lam  Yazmin Jones  Ciera Singleton  Terry Lyons

5. Reality:  69 or below is an F  Grades don’t just show what you know, but also show how hard you have worked  This includes taking initiative and owning your education

6. Ms. S… I know I’m smart. How can I show it?  Ask and answer questions  I ask questions to make sure you UNDERSTAND.  It’s ok if your answer is wrong. We’ll fix it.  UNDERSTAND the material  Don’t memorize. You won’t remember it, and you won’t be able to answer questions that make you THINK.  PRACTICE  During class (Class work)  After class (HW, Study, Tutoring)  Stay focused  The work will be really difficult at times, but you WILL be successful if you work hard.

7. Andre Elizabeth Brian Jimmy Brianna Tyler Ethan Monique Nytoria Jacori Kenneth Corey Yazmin Russell Dorothy Kevin Phung Raquel DaJanell Lester Brandy Steve Jennifer Sirk Ashley Cindy Darius Constance Ronnie Delvin WHITE BOARD – FRONT OF ROOM DOOR

8. Paul Anthony Tykia Jasmine A. Tori Michael Kris Errol Desante Randy Arcynee Yoli Monet Savannah Ciera Raine Jasmine R. Royce Wayne Bakari Kyle Jasmine S. Sandra Safe Alexis Xuan Brandisha Shauna Shenay WHITE BOARD – FRONT OF ROOM DOOR Austin Melvin

9. Points  Catalyst  Full credit: Start silently at bell  Half credit: Work shown  No credit: No work when Ms. S comes around  Notes  Practice 1  Full credit: Do the work, Sit up,  nb Participate  Practice 2  Full credit: Do the work, Follow directions  Behavior  Full credit: Stay on task, No side conversations or note passing

10. First Five  Pick up worksheets  Sit down immediately  Materials out and ready  Homework on desk  Silent catalyst

11. Catalyst Review Stands for…Huh? MMetabolism Food  Energy RReproductionMake identical organisms GGrowthGet bigger OOrganizationCELLS! RResponseChange in environment EEvolutionDNA!

12. Objectives By the end of today, SWBAT…  Explain why cells go through mitosis  Describe what happens during interphase

13. Humans are filled with cells like this beaker is filled with Skittles Cells Skittles

14. Humans grow by getting more cells!

15. How many cells do we begin with?

16. 2

17. How do we get more?

18. Reproduction and Growth!  Key Point #1: Multicellular organisms get bigger because they get more cells.  Two types of cells: Gametes = Sex cells (sperm and egg cells) Somatic cells = all other cells in your body

19. One cell divides into two cells… …then four, eight, sixteen… Mitosis = the process of somatic cell division.

20. Mitosis? Yeah!  What is the function of mitosis?  THINK: Why does mitosis occur?  What types of cells does mitosis occur in? Give a specific example!

21. Interphase  Key Point #2: The time between cell divisions is called interphase  Think INTER-MISSION!  Time for normal cell activities.

22. Interphase?  Describe what happens during interphase.

23. DNA  Key Point #3: ALL cells have DNA organized into units called chromosomes  DNA (deoxyribonucleic acid): Genetic information. Instructions for how a cell should run.  Chromosomes: pieces of coiled DNA. (Look like Xs.)  What is the difference between DNA and chromosomes?

24. 2 Legit 2 Quit  In humans, somatic cells have 23 pairs of chromosomes.  Somatic cells are 2N  N = # of copies of each chromosome  Why are our cells 2N? One copy from mommy One copy from daddy

25. DNA  Key Point #4: Cells must make an EXACT copy of their DNA before they divide  Why does a cell need to make a copy? Every cell needs to have a set of instructions (DNA).

26. Ok…  If we have two copies of each chromosome, how many copies do we have after we duplicate?  FOUR!  Using N…  4N! 4N

27. Notes Reflection (GP)  In your notes, you should be able to find answers FAST!  Question goes up.  Hand up when you find the answer.  If you do not have the answer in your notes, ADD IT IN!!!

28. Guided Practice  What is the process of cell division called?

29. Guided Practice  How do organisms get bigger?

30. Guided Practice  After mitosis, the two new cells are ___________ to each other.

31. Guided Practice  Explain the function of mitosis.  (Why does it happen?)

32. Guided Practice  Describe the function of DNA.

33. Guided Practice  What are chromosomes?

34. Guided Practice  How many N does a somatic cell have normally?

35. Guided Practice  What is going on in the cell during interphase?

36. Guided Practice  How many N does a somatic cell after the cell duplicates its DNA?

37. Guided Practice  If a martian has 16 pairs of chromosomes,  How many N are there?

38. Guided Practice  If a martian has 16 pairs of chromosomes,  How many chromosomes are there in total?

39. Independent Work Time Answer the following questions in COMPLETE SENTENCES in your notes. 1. Growth is one of the characteristics of life.  Explain how organisms grow.  What is this process of growth called? 2. Describe the function of DNA.  Show off question: What does DNA stand for? 3. Describe the structure and function of chromosomes. 4. Describe the two types of cells in the human body. 5. How many copies of each chromosome does a normal somatic cell have?  Why this many copies?  What is the short-hand way to show this? 6. Explain why a cell creates an exact copy of its DNA.  What is the short-hand way to show this? 7. What is the time in-between cell divisions called? Describes what happens during this time.  What is an easy way to remember the name of phase?

40. Exit Question 1. Why do cells perform mitosis? 2. What happens during interphase? 3. What is the difference between DNA and chromosomes? Write in complete sentences! Don’t talk during the Exit Question!